Claude Opus 5 matches Fable on coding at half the price, and Anthropic says it is the most aligned model it has ever shipped
TL;DR
Claude Opus 5 tops Fable 5 on most benchmarks at half the token price and is Anthropic’s most aligned model to date
Anthropic on Thursday released Claude Opus 5, a model that matches or exceeds its flagship Fable 5 on most coding and knowledge-work benchmarks at half the token price. The model is the fourth Anthropic has shipped in under two months, following Fable 5 in early June, Sonnet 5 at the end of June, and now Opus 5 on July 24. It costs $5 per million input tokens and $25 per million output tokens, the same price as its predecessor.
On Frontier-Bench, a coding evaluation that measures whether models can build working software from engineering drawings, Opus 5 more than doubles its predecessor’s score and surpasses every competing model, including Fable 5. On ARC-AGI 3, which tests novel problem-solving, Opus 5 scores roughly three times higher than...
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