Anthropic Ships Claude Fable 5.2 and Mythos 5.2 Right Before Its IPO

The Decoder · rss · 2026-11-10

The Decoder reports Anthropic released Claude Fable 5.2 and Mythos 5.2, its most powerful models, just before its IPO — in a free tier and a verified-organizations tier. The company claims the models solve open physics problems, show stronger cybersecurity skills, design working operating systems, and write over 90% of changes merged into Anthropic's core code. Anthropic says it has deliberately curbed capabilities that could accelerate the AI's own development.

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