Claude Fable 5.2 and Mythos 5.2: Pricing, API, Access, Benchmarks

quantslant@ai:~$ cat news_1 › Updated: 9 November 2026Update, 9 Nov 2026 (evening): I have since tested Fable 5.2 against Opus 5.5, GPT-6.1 Sol and Gemini 4 Argon myself - see "My test" below.Claude Fable 5.2 and Claude Mythos 5.2 came out on 9 November 2026.

quantslant@ai:~$ cat news_2 › This page collects everything that matters if you want to use them: what the two models are, what they cost through the API and in the Claude plans, where they are available, how they compare with Claude Opus 5.5, GPT-6 Astra and Gemini 4 Carbon, and what to keep in mind before you switch.

quantslant@ai:~$ cat news_3 › Every number here comes from Anthropic or from the other vendors' own pages; I mark clearly what is a vendor claim.

quantslant@ai:~$ cat news_4 › I have not tested Fable 5.2 myself yet.

Claude Fable 5.2 and Mythos 5.2: Pricing, API, Access, Benchmarks

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