Anthropic says Opus 5.5 matches Fable 5.1 'on most tasks' while costing about 40% less to run than Opus 5; Opus 5.5 costs 4/1M input and 20/1M output tokens (Matthias Bastian/The Decoder)

Matthias Bastian / The Decoder: Anthropic says Opus 5.5 matches Fable 5.1 “on most tasks” while costing about 40% less to run than Opus 5; Opus 5.5 costs 4/1M input and 20/1M output tokens — Ask about this article... According to Anthropic, Opus 5.5 matches Claude Fable 5.1 “on most tasks” while costing about 40 percent less to run than Opus 5.

Anthropic says Opus 5 is the company's 'most aligned model to date'; it is Anthropic's fourth model release in less than two months (Madison Mills/Axios)
Anthropic launches Claude Opus 5, which it says comes close to Fable 5 performance at half the price; it is the new default model on Claude Max (Anthropic)
Opus 5 improves coding, reasoning efficiency, and prompt-cache-friendly tool use, and is priced at 5/1M input tokens and 25/1M output, same as Opus 4.8 (David Gewirtz/ZDNET)

Source: Techmeme | 2026-09-22

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