Fable 5.1 Review: More Powerful, Faster, and Half the Cost
danshipper · x · 2026-09-02
A deep review of Fable 5.1 suggests Anthropic is 'back'. Testing shows it is more powerful than Fable 5, solving complex coding challenges that stumped its predecessor, while being faster and friendlier. It uses about half the tokens of Opus 5 for similar tasks, bringing frontier-level performance within Opus budgets. The new zero-data retention option removes enterprise barriers, making it suitable for both coders and general knowledge workers.
Related event: Anthropic Releases Fable 5.1 and Mythos 5.1 with 75% Cheaper Caching(174 posts)→
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