Anthropic's Fable 5.1 Leaks: 2x Faster, Half Cost
Yuchenj_UW · x · 2026-09-02
According to Anthropic's blog, Fable 5.1 shows an insane jump in performance. It reportedly fixed a 1-in-a-million crash that baffled Millennium's team for 4-5 years. Additionally, it is 2x faster than Opus 5 while using half the tokens.
Related event: Anthropic Releases Fable 5.1 and Mythos 5.1 with 75% Cheaper Caching(174 posts)→
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