Fable 5.1 released: Agentic coding tasks solved at half the cost
airesearch12 · x · 2026-09-02
Fable 5.1 and Mythos 5.1 have been released. The update focuses on token efficiency, with Fable 5.1 solving agentic coding tasks at roughly half the cost of the previous version, while also offering speed improvements. The author notes a more natural writing style in the new models.
Related event: Anthropic Releases Fable 5.1 and Mythos 5.1 with 75% Cheaper Caching(174 posts)→
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