Claude Fable 5 Launched On ChatLLM Try it for hard-coding prompts!! Auto-route to the best model based on prompt hard-coding – Fable 5
design – Opus 4.8
video – Grok Imagine 4.5
image – GPT Image 2 Our agent will automatically find the best AI for your task
AGENTS
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Claude Fable 5 Launch with Auto-Routing to Best Models
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Goal with precise prompt automatically executes
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Just set a /goal with a chonky well defined prompt and it just goes off and rips
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Fable 5 solves an adversarial PPO bug and improves parallelism
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It's 3 AM and Fable 5 just solved a bug for me that I've been struggling with for a week, impossible to find on an adversarial PPO training where the gradient was becoming almost zero… Well, it fixed it. And it also increased my parallelism to 4,557 steps/env/s.
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Claude Fable creates city block simulator with multi-agent traffic in one shot
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Just used claude fable (aka mythos) to create this city block simulator complete with multi-agent traffic, live detection boxes + tracks, and day to night cycle. And it just one shotted it. This is gonna be fun — the gap between idea and execution just keeps collapsing. pic.twitter.com/NqpeztzH84
— Bilawal Sidhu (@bilawalsidhu) 10 juin 2026Just used claude fable (aka mythos) to create this city block simulator complete with multi-agent traffic, live detection boxes + tracks, and day to night cycle. And it just one shotted it. This is gonna be fun — the gap between idea and execution just keeps collapsing.
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TIL: AgentsView to Calculate Tokens for Claude Fable 5
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A TIL on using http://agentsview.io to calculate token cost with Claude Fable 5 despite the fact that this model is not yet included in the AgentsView pricing database https://til.simonwillison.net/llms/agentsview-custom-model-price …
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Need to Integrate VLAs and Models in Production Robotics
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It's not VLAs versus World Models; production robotics needs both, in addition to model-based methods, all integrated by agentic coding. At ICRA last week, I presented a perspective on the divisions in our field, including
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LangSmith Executive Assistant Template for Email and Calendar
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LangSmith Fleet template spotlight: Executive Assistant Manages your inbox, calendar, and daily brief. An email agent that triages your inbox, briefs you every morning, schedules meetings, and learns your preferences over time. Try it today: https://
langchain.com/templates/exec
utive-assistant
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Claude Fable 5, Anthropic’s most powerful model on Poe
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Claude Fable 5 is now available on Poe. The most powerful model from Anthropic to date, designed for long and complex tasks: large-scale code migrations, deep research, and agentic sessions that last hours or days. Cutting-edge.
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The importance of self-verification loops in the era of powerful models
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We talk a lot about how important it is to set up self-verification loops. Especially in the age of powerful models that can run for long periods of time, self-verification is a key ingredient that enables the model to run for much longer, delivering a result that is closer to… https://t.co/NHiral0F9j
— Boris Cherny (@bcherny) 9 juin 2026We talk a lot about the importance of setting up self-verification loops. Especially in the era of powerful models that can operate for long periods, self-verification is a key ingredient that allows the model to function much more
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xAI and Gopuff build personalized shopping assistant with chat, voice, image models
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Learn more about our work with @gopuff to build a personalized shopping assistant with chat, voice, and image models https://
x.ai/news/grok-gopu
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