For Premium Members

Sol vs Opus: Which One Reviews Code Better?

7-minute video for Premium members. I tested Sol vs Opus as code REVIEWERS, running the same prompt 8 times: 4 on Opus, 4 on Sol, also on different thinking levels of Medium/High. Is there a clear winner?

My YouTube videos

I Tested 29 LLMs on CODE QUALITY: Leaderboard Changes

I Tested NEW GLM-5.3-Flash (ex Ox Alpha) on 21 Coding Prompts

I Tested NEW Qwen 3.8-Flash on 20 Prompts

AI Coding Community News

Claude on X: “We’re introducing Claude Fable 5.1 and Claude Mythos 5.1.“ — x.com

They’re the world’s most advanced models for coding and knowledge work.

Mark Zuckerberg on X: “Muse Code is out of beta and now built to handle bigger, more complex engineering tasks.” — x.com

Developers can get started with one command today.

affaan-m/ECC: Everything Claude Code — github.com

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

PostHog on X: “Your AGENTS.md is holding you back” — x.com

Long tutorial on X.

Tibo on X: “You should see your Codex usage go between 10% and 50% further than before.” — x.com

Please continue reading for an update on Codex usage limits. The team has been working around the clock, going through thousands of reports and shipping fixes.

sodiumsun/agenttrail — github.com

Local observability map for AI coding agents. Watch Claude Code, Codex, and Cursor plans, tool calls, file changes, and progress in real time.

ClaudeDevs on X: “Starting September 14, we’re permanently raising standard weekly limits in Claude Code by 25%.” — x.com

A bit misleading tweet, cause 25% is replacing a current 50% raise. But still.

Z.ai on X: “GLM-5.3 is now open-weight.” — x.com

Our most capable model for agentic coding and cyber defense is now available to download, run, and customize.

ClaudeDevs on X: “We’ve been shipping a lot of improvements to Claude Code”. — x.com

This week we made CLI startup faster, added more visibility into where your tokens go, made auto mode rules easier to see and edit, and shipped even more Remote Control fixes.

OpenAI on X: “We’re ending our partnership with Cursor following its acquisition by SpaceX.” — x.com

Under our proposal, Cursor’s direct access to our models would end on November 12.

Introducing /skill-doctor v1 — x.com

Skill doctor is a skill that improves your skills. Crawls your past CC, Codex, or Warp convos. Scores them for efficiency and code quality. Proposes diffs to your skills that you’d actually merge (STE-100 approved)

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

For Premium Members

I Tested 5 Strong LLMs on Long-Running Prompts

7-minute video for Premium members. Experiment: what if I benchmark models not on ONE prompt, but on the set of FOUR prompts? I tried this approach with 5 top LLMs, which scored the best?

My YouTube videos

I Tested NEW Qwen 3.8 27B on 20 Coding Prompts

It seems like we’re in the middle of mini-revolution around local LLMs, and I was trying to benchmark the newest Qwen 3.8 27B for that.

I Tried NEW Ox Alpha Model: Let’s Guess Which LLM It Can Be

A new “stealth” model is available on OpenCode: let’s see its results and guess which model “family” could it be.

Very Quick Update on Ox Alpha

A follow-up on yesterday’s video about new Ox Alpha model - I re-tested it with other thinking levels.

Plannotator: Code Review with Agentic Feedback Loop

I recently found a tool Plannotator that makes the code review process more pleasant than on GitHub after PR.

AI Coding Community News

Tibo on X: “Tomorrow we will bring back the 5h limit for Plus accounts across ChatGPT Work and Codex.” — x.com

This is necessary as (a) the 5h limit allows us to smoothen the load on our compute, allowing to keep the plan generous in terms of...

Thariq on X: “a skill people at Anthropic have been using a lot recently: ELI5 /eli5” — x.com

/eli5 “explain like I’m someone who knows nothing about this topic, using a HTML artifact with big pictures and few words”

You can now set Claude Code’s output style to Concise. — x.com

Claude leads with the result, keeps responses short, and still gives full detail when you ask. Turn it on in /config → Output style, or set “outputStyle”: “Concise” in settings.json.

Kieran on X: “The two most worthwhile lines of Claude Code configuration from this month’s experience” — x.com

DESIGN.md Examples for AI Agents | Refero Styles — styles.refero.design

Browse a curated DESIGN.md library for AI agents: colors, typography, spacing, components, and design rules from leading product websites.

Lee on X: “We just increased the included usage of Grok models in Cursor!” — x.com

Demand has been increasing with the launch of Grok 4.6. We already doubled limits last month with more compute. And now we’re raising limits again permanently. Enjoy!

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

So you’ll see my reviews and benchmarks of the latest models, but also I experimented with Sol/Luna money savings and gathered a lot of tweets/tutorials from AI coding community. Enjoy!

For Premium Members

Save Money: GPT-5.6-Luna with Sol Review (Experiment)

12-minute video for Premium members. Luna is much cheaper than Sol, so can we save money/time to prepare the plan with Sol, give implementation to Luna, and then review with Sol again? Let me show you the numbers from my experiment.

My YouTube videos

I Tested NEW GLM-5.3 and I’m Impressed

The new GLM-5.3 model has been released, with focus on better results for smaller output tokens amount and cyber security angle.

I Tested NEW Gemini 3.7 Flash in Antigravity: Same as 3.6 Flash?

Gemini Flash models were not impressive on my benchmark when using OpenCode, so I decided to give Antigravity a chance with Gemini-3.7-Flash.

I Tried NEW Grok 4.6 on 20 Prompts: Big Jump over Grok 4.5?

I tested the new Grok 4.6 model and put it on my LLM leaderboard, comparing the prices in Cursor vs API pricing.

I Tried TWO New Codex Features for Long-Running Tasks

Codex have launched two new things this week - Luna subagent management and 1M context window configuration.Links mentioned in the video:- For premium member...

I Tried NEW Deepseek-v4-Pro-0813: Better Than v4-Flash?

Deepseek have released their v4-Pro model out of preview mode, so I’ve run the benchmarks and calculated the upcoming increased prices.

I Tried Kimi Code with Kimi K3: Deep-Dive Review

I’ve been using Kimi K3 for my benchmarks via OpenCode, but now I had a chance to review Kimi Code with Kimi API, and this video shows what were the better/worse parts of my experience.

AI Coding Community News

Mark on X: “Codex tip: If you tend to switch the reasoning level often while you work, for instance between “Medium” and “High”, you should reconsider!” — x.com

Changing the reasoning level invalidates the context cache, costing a lot more tokens as the entire context window must be regenerated.

I make Claude Code keep a MISTAKES.md file. Here’s what actually happened. : r/ClaudeCode — reddit.com

Since my comment about keeping a MISTAKES.md file got quite a bit of feedback, I thought I’d make a dedicated post about it. The setup is...

ClaudeDevs on X: “We’re extending the 50% increase to weekly Claude Code limits through August 31.” — x.com

We hope to make this a permanent change to our plans, but strong demand for our models means that capacity may be tight over the coming weeks. We’ll keep you posted as things develop.

ClaudeDevs on X: “Claude Code can design now.” — x.com

The new /design skill (research preview) brings Claude Design’s artboard workflow into the CLI and Desktop, built on artifacts. Run /design to get editable artboards for your UI — pick one, tweak it, then have Claude implement it.

OpenCode on X: “Operation Cheepseek: Phase 1 Complete” — x.com

OpenCode Go subscribers now get $30 of usage for $10. Phase 2 initiating...

Cursor on X: “Origin, our code hosting platform, is now live.” — x.com

It’s fast, easy to use, and deeply integrated with Cursor. Get started by syncing your repos from GitHub.

Qwen 3.8 27B is excellent, but it defaults to wildly overthinking things — simonwillison.net

Friday’s big release was Qwen 3.8 27B, an Apache 2 licensed 27B parameter vision-capable LLM from Alibaba’s Qwen research lab. I’ve been looking forward to this one: 27B is an …

Tibo on X: “Let Sol manage an efficient fleet of Luna agents for you. “ — x.com

These models know each other well and collaborate to achieve the result in an incredibly fast and efficient way.

professorpalmer/Puppetmaster — github.com

Provider-neutral control plane for durable-state agent swarms: subprocess workers, leases, artifacts, memory, and deterministic stitching.

Tibo on X: “Here is how to enable a 1M-token context window in Codex for GPT-5.6 Sol.” — x.com

Even though we have tuned the context limit in Codex to be set optimally when it comes to performance and cost, this is a common ask, so here it is documented. A larger context window lets Codex retain

Example of a real working loop orchestrator : r/ClaudeAI — reddit.com

Posted in r/ClaudeAI by u/croovies • 103 points and 39 comments

Povilas on X: “I tried Qwen3.8 27B with OpenRouter (AkashML provider).” — x.com

Some people say it’s possible to run Qwen3.8 27B locally but I don’t have such hardware. Result: the simplest prompt from my LLM benchmark ran out of 15 min time I gave it and didn’t finish. Also, it’s REALLY expensive.

Token-Saving Plugins: The Denominator Matters — Tura Blog — turaai.net

A coding agent plugin says it can cut 90% of tokens. That may be true. The first question is: 90% of what? A command output compressor can remove most of the text from one

With Qwen3.8-27B, you can now own unlimited, fully private intelligence stronger than Opus 4.6 Max with less than 24GB of VRAM. — x.com

This is insane.

ClaudeDevs on X: “Hit your usage limit in Claude Code desktop? There’s now an auto-continue checkbox.” — x.com

Turn it on, and it’ll automatically continue where you left off once your limit resets.

Dex on X: “/show-me: compact visual representations for coding agents” — x.com

tl;dr make your agent converse visually instead of in walls of prose.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

For Premium Members

I Tried Using Deepseek-v4-Flash in Codex CLI vs OpenCode

6-minute video for Premium members. I decided to test whether harness can change the results - so is DeepSeek v4 Flash in Codex CLI better/worse in terms of quality/price/speed than in OpenCode?

I Tried Using Grok 4.5 in OpenCode vs Cursor

I’ve been using Grok 4.5 in OpenCode for my LLM benchmarking, but now, as Cursor is bought by the same company, would it make sense to use Cursor with Grok? I’ve tried, and here are the summarized results, in this 4-minute video.

My YouTube videos

I Ran 100+ Prompts with 24 LLMs on Go Project

A new project on my LLM coding leaderboard: how well did models perform with Go language, and what conclusions can we can make from general trends on 4 different projects.

I Tried GPT-5.6-Luna in Cursor vs Codex CLI: Better/Faster/Cheaper?

In many comments on this channel, you emphasized how harnesses may affect the results of LLMs, so I made a few experiments, and let me show you one of them.

I’ve Tried NEW /grill-me v1.2 by Matt Pocock

Matt has released a new official version of his very popular agent skills, and I tested the new “grilling” skill, comparing it to Claude Code plan mode.

I Tested NEW Muse Spark 1.2 by Meta on 15 Coding Prompts

Mark Zuckerberg has announced that Meta released v1.2 of their Muse Spark model, with Muse Code coming soon. Aren’t they too late to the party?

I Tried Skills Like `/wait-what` and `/bro` to Understand Opus 5

People are complaining that Opus 5 is hard to understand recently, but even if you don’t have this problem - there are skills to make its language much easier to understand.

Povilas Korop: “Learnings From 100+ Experiments Comparing LLMs for AI Coding”

My talk from “AI Coding Summit” in July in London has been published on GitNation.

AI Coding Community News

Forward Future Brian on X: “Codex tip: I always use define-goal instead of /goal.” — x.com

It’s basically like having a master level genius AI write your goal better than you could. And it’s an official OpenAI skill. You can get your prompts to run longer and...

ClaudeDevs on X: “We recently made auto mode the default in Claude Code” — x.com

Which means you no longer have to approve every action. But what determines if something is safe to run? Watch how it works.

Claude on X: “We’re making Claude Sonnet 5’s introductory pricing permanent.” — x.com

We launched Sonnet 5 in June at $2 per million input tokens and $10 per million output tokens through August 31, and that price will remain unchanged.

OpenAI on X: “We’re expanding our cybersecurity initiative Daybreak and introducing GPT-5.6-Cyber” — x.com

A new model for advanced, authorized cybersecurity work. As the threat landscape evolves, we’re putting frontier intelligence in the hands of...

New in Claude Code: your sessions can now message each other. — x.com

Instead of having to re-explain yourself in another session, you can now tell Claude to do it. It sends a summary (not your history or files), and the other session picks it up mid-task.

OpenAI on X: “After evaluating one of our upcoming models, Astra, we’re treating it as our first “critical” model for cybersecurity under our Preparedness Framework.” — x.com

This is a scenario we’ve planned for, and we’re putting additional controls in place to ensure Astra’s further development

OpenAI appears to be working on a feature that would let you purchase a rate limit reset for Codex — x.com

Source: public checkout pricing config & ChatGPT web app assets

Mark Zuckerberg on X: “Releasing Muse Code in beta today.” — x.com

It’s a terminal coding agent that takes on complete software engineering tasks across large repos: planning changes, writing code, validating the results. Powered by Muse Spark 1.2, a coding-focused model update.

Alexander on X: “We can finally talk about it: We found a way to extract hidden reasoning of frontier models” — x.com

We found a way to extract hidden reasoning of frontier models using a vulnerability in the APIs of every frontier AI company. We verified that our reasoning token count matches billed API thinking tokens 1:1 for most of the prompts we queried.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

From My Website

I Tried Two Local LLMs for Coding on my MacBook Pro M4

People say local LLMs are getting better for coding. I decided to test how they work in practice, with a few experiments, without investing in extra hardware. In this article, I will show tests on `google/gemma-4-e4b` and `Qwen2.5-Coder-14B-Instruct-GGUF` models.

My YouTube videos

I Tested NEW Qwen-3.8-Max (+ Important LLM Leaderboard Update!)

I tried the new Qwen3.8-Max model by Alibaba, and added a new 3rd project to my benchmarks.

I Tested MAX Effort of GPT-5.6-Luna and Deepseek-v4-Flash

Inspired by your comments yesterday, I updated my LLM benchmark with max thinking level of those cheaper models.

I Re-Tested GPT-5.6-Luna and Deepseek-v4-Flash

I updated my LLM coding leaderboard, and had to run another re-testing because Luna and Deepseek-Flash got updates with price/quality.

AI Coding Community News

OpenAI on X: “Starting today, we are reducing prices for GPT-5.6 Luna by 80% and GPT-5.6 Terra by 20%” — x.com

And offering a faster option for GPT-5.6 Sol in the API.

Thariq on X: “If you connect a Claude Connector (e.g. your gmail, calendar, slack, etc), Claude Code will also be able to use them” — x.com

Chris Sev on X: “the perfect skill doesnt exis... /bro” — x.com

rtk Claude Code Token Savings: A Skill Trial Benchmark — blog.jetbrains.com

Does “rtk” reduce Claude Code token usage? Part 2 of a series where we take public “token saving” add-ons for coding agents and run the same paired A/B benchmark against each of them.

emilkowalski/skills: Skills for Designers and Engineers. — github.com

For designers and engineers to help them build better user interfaces.

Deepseek V4 Flash Update — x.com

The DeepSeek API service will soon adopt a peak/off-peak pricing policy. During peak hours, prices will be 2x the regular prices, applicable to all billing items.

Gal on X: “84% of our Anthropic API cost came from cache reads and writes.” — x.com

Not input tokens, not output tokens. Cache. At Google, I honestly never thought much about the cost of AI. Joining an early stage startup completely changed that. Every dollar matters, so I became pretty obsessed...

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

My YouTube videos

I Tested NEW Opus 5 on 11 Coding Prompts

So the new Opus 5 is out, and in my first impression tests I compared it with Opus 4.8, with Fable and with GPT-5.6-Luna.

I Used GPT-5.6-Sol to Scan Codebase and Build a Diagram

I randomly saw an interesting tool on Twitter and decided to try it out.

I Tried Headroom: Did It ACTUALLY Save Tokens?

I tested a popular tool Headroom to save AI tokens with Claude Code / Codex, in the form of MacOS software. Does it ACTUALLY save money?

AI Coding Community News

Trending on X: “Developers Split on Anthropic’s New Claude Opus 5 Model” — x.com

Developers report it overcomplicates simple tasks, hallucinates details, makes more mistakes than 4.8, and requires heavy oversight in messy codebases. Power users like ThePrimeagen and Rod Johnson prefer rivals such as Fable 5 or GPT-5.6-sol, with many reverting to older models amid the hype-skepticism gap.

Kimi.ai on X: “Releasing the model weights and technical report of Kimi K3.” — x.com

Kimi K3 is our most capable model: a 2.8T MoE model with native visual understanding and a 1M-token context window. New model architecture: 2.5x the intelligence per unit of compute, not just more params.

Cursor on X: “Today we’re launching Cursor Start” — x.com

a new ₹649/month plan for developers in India. Start includes generous access to Grok 4.5 and Composer, so you can plan, build, test, and ship with agents every day.

Kun Chen on X: “When to use a big model (like sol/fable) at low reasoning effort, vs a small model (like luna/sonnet) at high reasoning effort” — x.com

i deliberately forced myself to use all the permutations a lot over the last couple of weeks to build intuition, and i realized...

Vibe Check: Claude Opus 5 Is Brilliant in Flashes, Frustrating in Practice — every.to

Anthropic’s latest Opus can do impressive work—but getting it there may require dismantling the systems you already use

Thariq on X: “The new rules of context engineering for Claude 5 models” — x.com

Tura-AI/tura — github.com

Across 348 long-horizon benchmark sessions, Tura used up to 83.1% fewer turns on the rewrite benchmark and improved the DeepSWE pass rate by up to 16.7 percentage points compared with Codex CLI.

Introducing Cursor Router, our intelligent model router that selects the right model for the task at hand. — x.com

Router delivers frontier-quality results at 60% lower cost.

The Claude Security plugin for Claude Code is now available in beta. — x.com

Scan your changes for vulnerabilities before you commit, or run a full scan across your codebase, all from your terminal on the Claude inference you already run.

Povilas on X: “Tencent Hy3 model is surprisingly good for coding, for its price.” — x.com

Tested my new LLM benchmark projects on it, with OpenCode Go. Pleasantly surprised.

Povilas on X: “Ok finished another round of LLM testing. Added Opus 5 High and GPT-5.6-Sol Medium to the table.” — x.com

Both ridiculously expensive compared to others. Best value for money is...

Ollama on X: “Kimi K3 is now available on Ollama’s cloud.” — x.com

To use it with Claude Code, run: ollama launch claude --model kimi-k3:cloud Currently Kimi K3 requires a Pro or Max subscription, and consumes extra usage credits. We’re quickly working on adding capacity to expand access.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

For Premium Members

Frontier LLM Benchmark: Fable vs Sol vs Opus - on 3 Projects

16-minute video for Premium members. I gave the frontier models the tasks to not generate new code, but to fix existing code in the very old open-source projects, fixing real issues reported by their users.

I Tried “Destructive Command Guard” Tool. VERY Good.

11-minute video for Premium members. If you want to protect from AI agent running “rm -rf” or “drop table” as a part of the prompt, this tool will help you.

My YouTube videos

I Tested NEW Kimi K3 with 25 Coding Prompts

The new Kimi K3 was released, and I was in a hurry to test it out on my LLM leaderboard benchmark.

I Tested NEW Gemini 3.6 Flash and Gemini 3.5 Flash-Lite on Coding

Two new models from Google: will they improve a pretty bad reputation of Gemini Flash family?

GPT-5.6-Sol May Delete Files or Databases: When/Why?

A few people reported that GPT-5.6-Sol performed destructive operations on their files or databases, so I investigated, and let me explain the reasons.

Claude Code: Prompts That Anthropic Teams Use

Did you know that Claude Code docs contain a set of typical prompts for inspiration?

AI Coding Community News

OpenAI on X: We’re partnering with @huggingface to investigate an unprecedented security incident. — x.com

Cyber-capable OpenAI models compromised Hugging Face production during a benchmark evaluation. Sharing preliminary findings to help defenders understand emerging risks.

ClaudeDevs on X: “How Anthropic runs large-scale code migrations with Claude Code” — x.com

Fireworks AI on X: “We ran Kimi K3 against Fable on ~1,000 agentic tasks” — x.com

Expecting a catch-up story. We got a specialization story instead. Kimi K3 outperformed on security, crypto, and long terminal loops. Fable beat on...

asgeirtj/system_prompts_leaks: Extracted system prompts from Anthropic - Claude Fable 5, Opus 4.8, Claude Code, Claude Design. OpenAI - ChatGPT GPT-5.6, Codex GPT-5.6, GPT-5.5. Google - Gemini 3.5 Flash, 3.1 Pro, Antigravity. xAI - Grok, Cursor, Copilot, — github.com

Extracted system prompts from Anthropic - Opus 4.7, Opus 4.6, Sonnet 4.6. OpenAI - ChatGPT 5.5 Thinking, GPT 5.5 Instant, Codex. Google Gemini - 3.5 Flash, 3.1 Pro, 3 Flash, Antigravity. xAI - Grok...

Kimi K3 May Have Changed the Future of Claude Fable 5 & AI : r/ClaudeCode — reddit.com

Posted in r/ClaudeCode by u/TemperatureNo4832 • 475 points and 211 comments

Claude on X: For the small teams with big plans: Claude Team plans now start at just 2 seats instead of 5. — x.com

Claude on X: Beginning July 20, Claude Fable 5 is included in all Max and Team Premium plans, at 50% of limits. — x.com

Pro and Team Standard users will continue to have access to Fable via usage credits, and will receive a one-time $100 credit.

Akshay on X: “Let’s build Claude Code’s harness (step-by-step)” — x.com

How I Plan, Build, and Run Loops with Claude Code in 40 Minutes | Thariq Shihipar — youtube.com

A YouTube video. Thariq works on the Claude Code team, and I’ve wanted to see how he builds for a long time. In our episode, he showed how to use /goal to keep Claude working...

0xSero on X: “GLM-5.2 at home for 15,000$” — x.com

ClaudeDevs on X: “Claude Code now has a screen reader mode” — x.com

Running `claude --ax-screen-reader` swaps the visual terminal UI for plain, linear text that screen readers (like VoiceOver and NVDA) can follow.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

My YouTube videos

I Tested GPT-5.6-Sol vs Fable/Opus and GPT-5.5

I made a quick test of one prompt to fix a bug: the difference in t...

I Tested GPT-5.6 Luna and Terra with Low/Medium Efforts

I used my LLM coding benchmark to try out the cheaper options of GPT-5.6 family of models, and let me show you the score and the cost.

I Tested Fable 5 and GPT-5.6 Sol as “Orchestrators”

I see a lot of people trying to use the most expensive models in the most efficient way, delegating the implementation to cheaper models with subagents.

I Tested NEW Grok 4.5 for Coding. Wow. Just Wow.

The new Grok 4.5 model was released, and after Grok previous iterations being really bad, this new iteration by joint venture with Cursor felt promising.

AI Coding Community News

Matt on X: “GPT-5.6-Sol just accidentally deleted almost ALL of my Mac’s files.” — x.com

And this is why I trust Fable 1000x more.

Crémieux on X: “GPT 5.6 Sol just straight-up deletes the files it’s working with and then panics about recovering them.” — x.com

Apparently I’m the not the first person this has happened to. What’s going on?

Bruno on X: “GPT-5.6 Sol just deleted my whole production database.” — x.com

That’s it. Not a joke. This had never happened to me before, with any other model, ever. It’s not safe.

BridgeMind on X: “GPT 5.6 SOL CANNOT BE TRUSTED.” — x.com

I woke up this morning and my MRR was down THOUSANDS of dollars. My customers did not cancel. Code written by GPT 5.6 Sol canceled EVERY active Stripe subscription my business had. In 7 seconds. While I slept. Fable 5 has never done this to me.

Dhruv on X: “After spending the last few weeks trying out different skills from UI Skills...” — x.com

These are the 10 that stood out to me the most: 1. emil-design-eng; 2. make-interfaces-feel-better; 3. ...

Claude on X: “We’re extending Claude Fable 5 access on all paid plans, as well as keeping Claude Code’s weekly rate limits 50% higher, through July 19.” — x.com

OpenCode on X: Introducing Tabs — x.com

OpenCode Desktop is now built around tabs. Start a new session in a tab, or open an existing session from any of your projects. Open a new tab when you’re starting something new, and close it when you’re done.

Seriously, what just happened to the weekly quota on 20x? : r/ClaudeCode — reddit.com

I just use Opus 4.8, Fable consumes too much, i had my weekly restarting a few hours ago and while the session is on 54% the weekly is already on...

Sumuk on X: “Some thoughts about GPT-5.6-Sol after ~30B tokens” — x.com

Sol is the most OCD model I’ve used thus far. It very frequently gets one-shotted by random nits in the codebase and writes a bunch of tests to fix it. Even with fast mode, it’s incredibly slow to do this kind of iterative...

International Cyber Digest on X: “xAI’s Grok Build CLI was uploading entire Git repositories to a Google Cloud” — x.com

Private codebases and unredacted secrets included. The uploads quietly stopped via a hidden server-side flag.

Theo on X: “How to use gpt-5.6-sol without hitting limits” — x.com

Vox on X: “Sol/Luna in Claude Code vs Codex” — x.com

Yesterday’s replies recommended Luna for subagents. My Codex tests went the opposite way. Then I saw Tibo’s post and moved the same benchmark to the Claude Code harness.

Boris Cherny on X: “New in Claude Code: /checkup” — x.com

Run /checkup to: 1. Clean up unused skills/MCPs/plugins and save context
2. Dedup your local CLAUDE.md against the checked in CLAUDE.md
3. Break up root CLAUDE.md into nested CLAUDE.md’s + skills
4. Turn off slow hooks

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

My YouTube videos

I Tested NEW Fable 5 vs Opus 4.8 on Two Coding Tasks

Fable 5 model is available again, but is it worth paying money for, and on what tasks? Let me show you what differences I found in my testing.

I Tested NEW Tencent Hy3 Model with 5 Coding Projects

So the model Tencent Hy3 is out of preview mode, free for now in Opencode/Openrouter, and I wondered which place it would land on my LLM coding leaderboard.

AI Coding Community News

Anthropic: We’re extending access to Claude Fable 5 on all paid plans through July 12. — x.com

ClaudeDevs on X: Getting started with loops — x.com

Claude Code tip: /𝚌𝚍 moves your running Claude Code session to another directory without restarting. — x.com

Your conversation and context come with you, and Claude picks up the new project’s CLAUDE.md.

Marcos on X: “Claude code just added a “feature” where questions from the model automatically time out after 60 seconds” — x.com

With no way to disable. This completely breaks my workflow of running 5-10 sessions at a time and steering them by answering their questions as they work very upset at this.

Introducing ZCode, the official development environment for GLM-5.2 — x.com

GLM Coding Plan subscribers: now 1.5x usage quota in ZCode. BYOK supported: works with your existing subscriptions and APIs

Ashley on X: “GPT-5.4 costs 60% less than GPT-5.5 to write a plan, but the plan is worse” — x.com

So the actual build costs much more to do, and the resulting diff is poor. I thought this would be the case, but it’s nice to have quantifiable metrics that show it.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

For Premium Members

I Tried Ponytail Skill: Shorter/Better/Cheaper Code?

17-minute video for Premium members. I tested Ponytail skill in Claude Code on three different projects and prompts, comparing the speed, token usage, and the code quality.

My YouTube videos

I Tested NEW Sonnet 5 with 25 Coding Prompts

Anthropic released Sonnet 5, and I ran my LLM coding benchmarks on it. Now I’m confused with so many questions, let me show you why.

How I Plan New Projects with Claude Code Opus

A free video from my recently-released course called “Plan - Code - Review” about my approach to planning. Full 45-minute course: https://aicodingdaily.com/course/plan-code-review?mtm_campaign=youtube-260625-plan-code-review More of my AI Coding experiments on my website: https://aicodingdaily.com?mtm_campaign=youtube-channel-default-link

I Tried Impeccable Design AI Skill: Anti-Slop Tool

Am I alone started seeing the same/similar design style and elements almost everywhere, which screams “AI generated”? Impeccable skill is exactly fighting ag...

[Post] Received this email from Deepseek: price change and official v4 launch

AI Coding Community News

Anthropic on X: Claude Fable 5 will be available again globally tomorrow. — x.com

After a series of productive conversations with the US government, we’re redeploying the model with a new set of classifiers to target and block more cybersecurity tasks. In the near term, some routine tasks like coding...

Fable 5 will be included for up to 50% of weekly usage limits through July 7 — x.com

What does this mean btw? After I hit 50% weekly usage Fable is no longer available?

OpenAI: Introducing a limited preview of GPT-5.6 — x.com

GPT-5.6 Sol, our next generation frontier model, as well as GPT-5.6 Terra, a balanced model for efficient, everyday work, and GPT-5.6 Luna, a fast and affordable model for high-volume work.

Keep AI spend flat while token usage grows exponentially: With better defaults, routing, and caching. — x.com

Putting this into practice has cut our AI spend nearly in half, while our token usage continues to grow.

Boris on X: In the next version of Claude Code: subagents run in the background by default, so you can keep talking to Claude while your subagents work — x.com

If you want your agent to run in the foreground, just tell Claude

26 minutes with Claude Code creator Boris Cherny on how Spotify runs AI agents across 20 million lines of code. — x.com

“Once we implemented loops in our workflow, our agent success rate went from 20-30% to 80%.”

Paul on X: “My NEW Codex workflow is better than I expected. 8 new features ready for release in my app.” — x.com

Took a few attempts to figure out the workflow and some bugs. Feels like the future.

Introducing Claude Science, a new app designed with every stage of research in mind. — x.com

Artifacts traced to their code, environments managed on demand, and 60+ optional scientific databases that you can connect. Available now in beta.

headroomlabs-ai/headroom — github.com

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 60-95% fewer tokens, same answers. Library, proxy, MCP server.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

Also, my second course on AI Coding Daily: I’m showing my methodology how I build the realistic project trying to save time/money using the *mix* of LLMs.

Finally, a few pieces of news from the AI coding community, but it seems like there are fewer loud announcements and people are more in the “deep work” mode trying to actually use the existing LLMs more efficiently.

For Premium Members

[NEW Course] Plan-Code-Review: Building a Real Upwork Project in 1 Hour

In this 45-minute course, I will show how I build a real project from Upwork job description, using Opus for planning, and other models for implementation and code review.

My YouTube videos

I Found One Prompt Change For Better AI Code

I think I discovered the main reason why frontier LLMs score 20/20 on my benchmark and cheaper models do not, let me show you.

My NEW LLM Coding Score: Models Often Fail at THIS

I’ve benchmarked the models on one new project: found the aspect where only frontier models scored higher points, and none of the models scored perfect 5 out of 5.

I Tested FREE Nvidia Nemotron Model on 5 Coding Tasks

Before this video, I hadn’t heard about a free LLM like Nemotron, let me show you how much it scored on my traditional benchmark.

[Text Post] You asked in the comments to test GPT-5.4-Mini on my LLM benchmark. I did. Wow.

Almost same result on daily coding tasks, but 6x cheaper than GPT-5.5 Medium.

AI Coding Community News

Introducing Claude Tag, a new way for teams to work with Claude. — x.com

In Slack, Claude joins as a team member with access to the channels and tools you choose. Tag Claude in and delegate tasks to it while you focus on other work.

Claude Code now supports artifacts — claude.com

Preview your in-progress work in Claude Code as a live, interactive artifact—built from your full session context and shareable with your team.

multica-ai/andrej-karpathy-skills — github.com

A single CLAUDE.md file to improve Claude Code behavior, derived from Andrej Karpathy’s observations on LLM coding pitfalls.

rtk-ai/rtk — github.com

CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies.

Tibo on X: “Reminder that you can use the Codex App, CLI and SDK with any open source model, not just with OpenAI models.” — x.com

Cursor: We’re launching code storage and git hosting — x.com

Origin gives teams and agents a place to host, review, and collaborate on code. Available this fall. Join the waitlist.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

My YouTube videos

[Video] I Tested NEW GLM-5.2 on Four Projects. Wow.

Many of you asked for GLM-5.2 benchmark, and here we go: has it got much better from 5.1, and what place did it get on my LLM leaderboard?

[Video] I Tested NEW Kimi-K2.7-Code with 20 Prompts

I used the same LLM benchmark for the new Kimi K2.7 Code model. Which place did it take on the leaderboard? And was it worth the price?

[Post] After Fable 5 ban, I tested LOCAL models for coding.

Wanted to see if my Macbook Pro M4 (24 GB RAM, 512 GB HDD) works with open-source LLMs.

[Post] Anthropic is Pausing the Agent SDK Credit Charge

Now that’s unexpected good change from Claude team. But still, if they are changing their minds that often, I don’t think you could trust to build any significant automation with it.

AI Coding Community News

SpaceX to acquire Cursor for $60B in stock, days after blockbuster IPO — techcrunch.com

The deal is supposed to help SpaceX’s struggling AI division. The company told IPO investors it sees a $26 trillion addressable market in AI.

Introducing the Fusion API, the smartest compound model in the market. — x.com

Fusion achieves Fable-level intelligence at half the price. How it works

OpenAI on X: “We heard you wanted to use Codex rate limit resets on your own time.” — x.com

Starting today, we’re rolling out the ability to save rate limit resets to use later. We’re starting Go, Plus, Pro, and Business users with one free reset.

Steve (Builder.io) on X: “Introducing /visual-plan - a skill to generate rich, visual plans for Claude Code and Codex.” — x.com

Plan mode in Claude Code is incredible. But I always find my eyes glazing over when it gives me this huge markdown essay in my terminal. I found I can make much better visual plans

OpenCode Go on X: “We’ve made a public stats page so you can see the latest data on what models are being used and how” — x.com

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

A short email this time while I’m on vacation: my videos and a few links to the community tips/news. Enjoy!

My YouTube videos

I Tried NEW Fable 5 vs Opus 4.8 on Code Optimization Prompt

I tested the new Mythos-class model Fable 5 and the result was indeed different. Let me show you.

I RE-Tested Deepseek v4 Flash. Now I’m Confused.

Some of you in the comments asked to put Deepseek Flash on my LLM leaderboard, so let’s do this.

I Tested 5 Coding Harnesses with GPT-5.5, Opus 4.8 & Gemini 3.5 Flash

After testing LLMs with multiple projects, I decided to go “one layer” higher and test harnesses that call those LLMs. Are there any differences?

I Tested NEW Qwen3.7-Plus on FIVE Projects

I’ve run the prompts from my LLM benchmark on the new Qwen 3.7 Plus. Where did it land on my leaderboard?

AI Agent can Teach/Quiz You While Writing Code: I Tried This Skill

It’s important that you would understand the code written by AI agent, so that you can maintain it in the future. There’s a skill for that.

AI Coding Community News

Claude on X: “Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use.” — x.com

Its capabilities exceed those of any model we’ve ever made generally available. More details in this Twitter thread.

What it feels like to work with Mythos — oneusefulthing.org

Long article from Ethan Mollick. Claude Fable represents another big jump in AI.

Addy Osmani on X: “Loop Engineering.” — x.com

A new trend in AI coding.

Matt Van Horn on X: “Every Agentic Engineering Hack I Know (June 2026)” — x.com

A long article on X.

vibeforge1111/keep-codex-fast — github.com

A backup-first Codex skill for keeping local Codex state fast, clean, and recoverable.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

Big update on my AICodingDaily.com website: I’m introducing COURSES for Premium members! For now, only the first mini-course on Planning system that works for me, but already a few more coming.

With that in mind, I’m moving membership subscriptions from here to the website, as on Substack I have very limited options for publishing something like courses. Here’s an article with details: Moving Paid Substack Membership to AICodingDaily.com Website

And now, as usual, a lot of useful links to my videos and community tools/tips/news. Enjoy!

Hey hey,
Big update on my AICodingDaily.com website: I’m introducing COURSES for Premium members! For now, only the first mini-course on Planning system that works for me, but already a few more coming.

And then, as usual, a lot of useful links to my videos and community tools/tips/news. Enjoy!

From My Website

[Premium Mini-Course] AI Coding: My PLANNING System

Across 5 short videos in 37 minutes, I’ll show how I think through planning, use plan mode in Claude Code and Codex, and pressure-test ideas with the grill-me skill. Source code and prompts included.

Skill /handoff by Matt Pocock: Summarize Current Session for Another Agent

A very simple skill that you may also use as a prompt, when you’re running out of context/time in the current coding session, and you want to continue later, potentially with another agent.

My YouTube videos

I Tested NEW Minimax M3 on Four Projects

A new Minimax M3 model was released, and it’s pretty different quality from previous M2.7, let me show you.

I Tested NEW Opus 4.8 on Four Projects

The new Claude Opus 4.8 is out, and I ran my LLM benchmark to compare how better/different it is from 4.7 and other models.

I Tried NEW Gemini 3.5 Flash. It Has One Big Problem.

After a week of hesitating, I decided to test out the Gemini 3.5 Flash, after all, and here’s what I saw.

I Tested GPT low/mini/older Models: Price/Quality Difference

In the comments to other YouTube videos, you asked to test GPT-5.5 Low effort, GPT-5.4-mini, and GPT-5.3-Codex.

Coding LLM Prices Comparison: My 5 Takeaways

I have filled in the prompt cost for all 13 LLMs into my leaderboard, and let’s discuss those numbers.

AI Coding Community News

Shpigford/chops: Your AI agent skills, finally organized — github.com

A macOS app to browse, edit, and manage skills across Claude Code, Cursor, Codex, Windsurf, and Amp.

Agent Skills Cheat Sheet: Complete Reference — webfuse.com

How to create Skills, and how to work with them. SKILL.md spec, authoring patterns, scripts, evals, and client integration in one place.

A harness for every task: dynamic workflows in Claude Code — x.com

A very detailed article by Thariq from Claude Code team.

The Horror of First Day of GitHub Copilot new pricing — x.com

Sarcasm: “Day one of GitHub Copilot token-based billing and the customers LOVE IT! They’re all celebrating the power and value of generative AI!” (and this is just one of multiple tweets on the same topic)

Tibo on X: “We will be sunsetting GPT-5.2 and GPT-5.3-Codex in Codex on June 2nd” — x.com

To simplify our Codex compute fleet management, we will be sunsetting GPT-5.2 and GPT-5.3-Codex in Codex on June 2nd when logged in with your ChatGPT account. For free plans, GPT-5.5 will be the default frontier model to build and work with going forward. These models will remain available on our API.

ClaudeDevs on X: With Opus 4.8, you can add system instructions mid-conversation without breaking the prompt cache. — x.com

More cache hits means lower cost and latency for your API requests.

How to Stop Claude Code From Reading Your API Keys, SSH Keys, and Passwords (Exact Deny Rules) — x.com

Big article on X by Rody.

Cat on X: “New Claude Code feature: dynamic workflows!” — x.com

Mention “workflow” in a prompt and Claude will dynamically create an orchestration plan that it strictly follows, allowing you to confidently trust that every stage happens in the right order even across 100s of agents.

OpenCode on X: “OpenCode x MiMo V2.5 - Free for a limited time” — x.com

1M context • reasoning • text • image

I’m a software engineer with a decade of experience. I vibe code all of my side projects from my phone using Claude Code. Here are the rules I follow. — reddit.com

Reddit post with surprisingly sane and solid workflow for AI-assisted development.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

From today, it will not be possible to purchase premium membership on this Substack. Instead, you should go to the website and get the membership there directly and you will get more premium content there.

This is actually the primary reason to move on because on Substack I cannot easily create flexible types of content like courses, custom pages, and individual design elements.

Side note: I’ve launched my first video course AI Coding: My PLANNING System!

For Existing Paid Substack customers

The migration is actually easy and some of you did migrate already but if you haven’t yet just go to AICodingDaily.com, click Register on the top-right, and when you register the system would recognise the email you have registered with on Substack.

It will automatically assign the same membership ending date as on Substack. When that membership date expires you may purchase the new membership on the website to extend it.

What Happens with Free Substack Newsletter

I will still continue Substack with weekly newsletter because there are more than 1,000 subscribers here, but since it takes time for me to duplicate the content on both, maybe in the future I will move on the free newsletter to only the website, too.

Thank you for being a subscriber, doesn’t matter if free or paid, because it means you believe in my mission of testing the AI coding tools so you don’t have to. I hope to continue and reach the point when it becomes sustainable financially (it isn’t yet).

For Premium Members

I Tried /grill-with-docs Skill: Massive Difference

26-minute video. I went through /grill-with-docs session based on a project description from a client, and then gave the result docs to Composer 2.5 to implement the code.

I Tried Planning with Opus and Building with Deepseek Flash

18-minute video. One of the ways to save money on tokens is to prepare the plan with expensive model like Opus/GPT, and to give implementation to a cheaper model like Deepseek or new Cursor Composer 2.5. I tried this scenario and will show you code quality and actual cost.

Benchmark of 12 LLMs on React/Typescript: 7 Tests with Playwright

12-minute video. I have executed the same prompt to create 7 React component, on 12 AI models, 5 times on each. Let me show the results and the conclusions.

My YouTube videos

I Tried NEW Qwen-3.7-Max on Three Projects

Another new LLM was released, and I hurried to test it out, comparing to other models on the same benchmark.

Your LLM Prompt Result Depends on THIS Factor

I made an experiment with 8 different LLM, giving the same prompt on two different-quality codebases. Did any model even try to refactor bad code?

I Tried to Plan with Opus and Build with Deepseek Flash / Composer 2.5

Shorter free version of Premium video from above.

Benchmark of 12 LLMs on React/Typescript: 7 Tests with Playwright

Shorter free version of Premium video from above.

AI Coding Community News

AI usage is getting too expensive?
x.com

Look at the news. - MS is restricting Claude Code usage as their bill went too high - Uber used their CC yearly budget by April - GitHub Copilot prices skyrocket since June 1st. And more.

We’ve shipped a security-guidance plugin for Claude Code
x.com

It helps identify and fix vulnerabilities as you’re writing code. Available for all Claude Code users. Install from the plugin marketplace (/plugins).

OpenRouter on X: “Today we’re announcing our $113M Series B”
x.com

Over the last 6 months, weekly volume on OpenRouter grew from 5T to 25T tokens as AI rapidly shifts from experimentation into production. We’re excited for what comes next.

Peter Steinberger on X: “Folks: when you write skills, ask your agent to be token efficient, relax grammer.”
x.com

I see too many skills that write books in the skill description, and all that crap is loaded into every context. I wrote a skill that finds the worst offenders.

James Long on X: “we built a diff viewer in opencode! available now”
x.com

More and more work is moving into coding agents, I don’t live in my editor anymore but you gotta keep an eye on these little goblins, they write bad code.

DeepSeek on X: “We are making our discount permanent!”
x.com

DeepSeek-v4-Pro stays with 75% discount. Enjoy building with DeepSeek-V4-Pro and bring your innovative ideas to life!

OpenAI on X: Now your Mac doesn’t have to be unlocked for Codex to use your computer.
x.com

From your phone, Codex can securely use apps on your Mac, even when the screen is off and locked.

In Claude Code: run /usage to see a breakdown of which Skills, Agents, MCPs, and Plugins are using your tokens
x.com

CLI today, coming to Desktop next

Theo on X: “Gemini 3.5 Flash is a really interesting release.”
x.com

It’s super fast and surprisingly smart. It’s also more expensive (3x more per token) and super token hungry. The result - it costs 2x more to run than Gemini 3.1 Pro on similar tasks. It’s more expensive than GPT-5.5 Medium.

Claude Code vs Codex vs Cursor (an honest comparison)
youtube.com

Video on YouTube by Theo. The three main coding agents right now are Claude Code, Codex, and Cursor. Which one should you use?

Today we’re releasing DeepSWE, a new standard for agentic coding benchmarks.
x.com

On public leaderboards, top models often look relatively close in capability. DeepSWE shows where they actually diverge, reflecting the realistic experience of developers in their day-to-day work.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com

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For Premium Members

Codex App: 8 Features You May Not Know

11-minute video. Codex App is really convenient to work with multiple projects at the same time. I've found quite a few "hidden tricks" that are not visible right away. Let me show you.

My YouTube videos

I Tested NEW Composer 2.5. Wow. (Updated LLM Benchmark)

I have benchmarked the new Cursor Composer 2.5 model with the same projects/prompts I did earlier this month, let me show the results.

AI Coding “Trick”: Ask LLM Why It Made Certain Decisions

I saw a tweet by Thariq from Claude Code which appeared to be incredibly powerful to analyze the prompt result. Let me show you, in Claude Code and Codex.

I Realized Why Western LLMs Beat Chinese Models: My Example

My new benchmark shows Western/Chinese models in action, and important detail that I found repeating.

I Tried NEW Clawpatch for Codex: “Optimized” Code Review

I saw this tweet by Peter, author of Openclaw, and decided to try his Clawpatch.

AI Coding Community News

ClaudeDevs on X: “Starting June 15, paid Claude plans can claim a dedicated monthly credit for programmatic usage.”
x.com

The credit covers usage of:

• Claude Agent SDK

• claude -p

• Claude Code GitHub Actions

• Third-party apps built on the Agent SDK

Matt Pocock on X: “Anthropic has given us a “dedicated monthly credit”. What does it ACTUALLY mean?
x.com

It slashes AFK usage limits of Claude Code by ~5-20X. Here’s how it affects you.

Claude Code weekly limits are increasing 50%, now through July 13.
x.com

Live now for all Pro, Max, Team, and seat-based Enterprise users.

The Claude Code Setup Behind Shopify’s 23,000 Engineers (Exact Config You Can Copy)
x.com

Long-form article on X by @zodchiii

ClaudeDevs on X: “What are best practices for running Claude Code at scale?”
x.com

New blog post on what we’ve learned from teams running it across multi-million-line monorepos, decades-old legacy systems, and distributed microservices.

Cursor on X: “Introducing Composer 2.5, our most powerful model yet.”
x.com

It’s more intelligent, better at sustained work on long-running tasks, and more reliable at following complex instructions. For the next week, we’re doubling the included usage of the model.

ClaudeDevs on X: Useful tip to cut time-to-first-token on longer prompts in the API: pre-warm the prompt cache.
x.com

Send your system prompt before the user prompt. Claude writes it to the cache, but skips generating any output. When the real user request lands, it’ll hit a warm cache.

OpenAI on X: “Now in preview: Codex in the ChatGPT mobile app.”
x.com

Start new work, review outputs, steer execution, and approve next steps, all from the ChatGPT mobile app. Codex will keep running on your laptop, Mac mini, or devbox.

Povilas on X: “MiMo-v2.5-Pro in OpenCode is often auto-switching into Plan mode”
x.com

It suddenly auto-switched into Plan mode (in Opencode), so when I got back to computer in 10 minutes, planning to review the FINISHED task, it was like “here’s the plan, should I go ahead?” For a pretty trivial task.

That’s a wrap for this week. Keep building with AI!

Povilas Korop
AICodingDaily.com