@mattshumer_: Okay this model is really damn good (first use, opinion subject to change)

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Summary

Claude introduces Claude Fable 5.1 and Claude Mythos 5.1, claiming they are the world's most advanced models for coding and knowledge work.

Okay this model is really damn good (first use, opinion subject to change)
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Okay this model is really damn good (first use, opinion subject to change)

Claude (@claudeai): We’re introducing Claude Fable 5.1 and Claude Mythos 5.1.

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

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Anthropic announces Claude Opus 5, a powerful and cost-effective AI model that approaches the intelligence of Claude Fable 5 at half the price, achieving state-of-the-art results on coding and knowledge work benchmarks.

@seclink: Anthropic released Claude Fable 5 on June 9. As a “Mythos”-class model, it leads benchmarks in coding, research, and visual processing, especially good at large-scale projects like code migration. The model is now available on http://Claude.ai…

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Anthropic released Claude Fable 5 on June 9, a “Mythos”-class model that leads benchmarks in coding, research, and visual processing, especially good at large-scale projects like code migration. It is now available to Pro, Max, Team, and Enterprise users.

@corbin_braun: need this in cursor ASAP

X AI KOLs Timeline

Anthropic introduces Claude Fable 5.1 and Claude Mythos 5.1, described as the world's most advanced models for coding and knowledge work.

Introducing Claude Fable 5.1

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Anthropic has released Claude Fable 5.1, an upgraded AI model designed to excel at complex, multi-step tasks like financial modeling and code optimization, with improved stability and accuracy throughout lengthy processes.

Claude Fable 5.1

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Claude Fable 5.1 is Anthropic's release of its most advanced AI models for coding and knowledge work, with research capabilities that offer an early glimpse into AI contributions to scientific progress.