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TL;DR We are experimenting with interpreter skills: an extension of agent skills that allows you to include a TypeScript module with a skill. A brief overview by @huntlovell https://
langchain.com/blog/interpret
er-skills
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CODE
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Experimenting with interpreter skills using TypeScript
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My Hermes Agent using Claude Fable 5 to write git commit
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My Hermes Agent using Claude Fable 5 to write git commit -m "fixed" pic.twitter.com/Xq5Vk7Oyvq
— Shubham Saboo (@Saboo_Shubham_) 9 juin 2026My Hermes Agent using Claude Fable 5 to write git commit -m "fixed"
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Creating mobile app, promo video and pitch deck with Replit
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I built a mobile app, promo video, and pitch deck for my travel app at the same time using Replit's parallel agents 👇 pic.twitter.com/alTA1mPULy
— Replit ⠕ (@Replit) 9 juin 2026I created a mobile app, a promotional video and a pitch deck for my travel app at the same time using Replit's parallel agents
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Disco hall recreation in Three.js switched to Opus over safety filter
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My first task for Fable was to recreate a disco hall from a photo using Three.js. It worked for 15 minutes before switching to Opus because of a safety filter, which felt a bit odd. Did a great job though. Artifact: https://
claude.ai/public/artifac
ts/a74fbb2a-a31a-4221-a695-b39266b419fd
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AI creates coin-flipping Balatro, self-aware snake, isochronic map
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Some fun examples, I just gave basic prompts and the AI executed:
Balatro, but for coin flipping (all the design and ideas was Fable): https://
play-flipside.netlify.app
The best self-aware snake game: https://
snake-stable-build.netlify.app An isochronic map using real data: https://
isochronic-passage-chart.netlify.app/#syd -
Fable 5 available in Claude Code and Cowork, best coding model
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Fable 5 is now available in Claude Code and Cowork
— Boris Cherny (@bcherny) 9 juin 2026
Fable is the best model I have used for coding, by a wide margin. It is a big step up, enabling less prompts and steers, more efficient token use, better code quality, better tool use, more intelligent self-verification, longer… https://t.co/RmVfZh39HtFable 5 is now available in Claude Code and Cowork. Fable is the best model I have used for coding, by far. It is a big step forward, allowing fewer instructions and guidance, more efficient token usage, better quality of
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Claude 5 Fable: state-of-the-art on benchmarks, excels on longer and complex tasks
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Claude 5 Fable tl;dr – It is state-of-the-art on nearly all tested benchmarks of AI capability, showing exceptional performance in software engineering, knowledge work, vision, scientific research -The longer and more complex the task, the larger Fable 5’s lead over our other
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Spectacular slope of the precision/cost frontier
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By observing the precision/cost frontier on the FrontierCode benchmark we discussed, we can see the spectacular slope of computation at the time of testing this new model. Look how it rises! Even in the low configuration, the model performs — and costs — more.
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Big leap in agentic programming and new FrontierCode Diamond benchmark
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Regarding the first benchmark table they share, the big leap is observed especially in agentic programming (where labs get more value from users). The new FrontierCode Diamond benchmark released yesterday, designed to be more difficult than
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Mythos Launch: FrontierCode Benchmark, Opus 4.8 & GPT 5.5 Lack Scaling
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Mythos is live! so excited to have our FrontierCode recognized as the next frontier coding bench. on FC Diamond, BOTH Opus 4.8 and GPT 5.5 don't meaningfully scale with effort, which many of you caught yesterday. Mythos/Fable posttraining have really applied that test time