Anthropic launches Claude Fable 5.2 and Mythos 5.2
Anthropic released two new top-tier models, reportedly beating Opus 5.5 and rival frontier models, with pricing announced and IPO speculation attached.
What we know
Anthropic said the models are available now, and Anthropic announced they improve coding, reasoning and vision. Market news accounts report pricing of $8 per million input tokens and $40 per million output tokens, with an optional fast mode at $16/$80. Market news accounts say Fable 5.2 beats Opus 5.5 in almost everything and tops GPT-6 Astra and Gemini 4 Carbon on most tests, which is unconfirmed, and that Kalshi prediction-market odds put an IPO announcement this month at 80%. Anthropic said a team of 1,000 Fable 5.2 agents formalized Fermat's Last Theorem in 30 hours, while Opus 5.5 completed only 26% in the same setup.
By the Global Eye 24 desk, with AI assistance. Updated as the story develops. Spot an error? Write to corrections@globaleye24.com.