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Anthropic releases Opus 5.5 with lower prices and Fable-level performance

In shortAnthropic’s newest model, Opus 5.5, was released on Tuesday, setting a new state-of-the-art in coding and knowledge work performance, according to the company.

Based on reporting from TechCrunch; no matching primary source is listed in the Source Stack yet.

What happened

Opus 5.5’s safety training was broadly similar to its predecessors, with alignment testing and pre-release evaluation by outside organizations like METR and Frontier Design. Anthropic’s newest model, Opus 5.5, was released on Tuesday, setting a new state-of-the-art in coding and knowledge work performance, according to the company.

Why it matters

Opus 5.5 with lower prices and Fable-level performance changes the cost and availability of an AI workflow. Teams should compare pricing, operating limits, output quality, and integration requirements before switching production work.

Who it affects

Researchers evaluating Opus 5.5 with lower prices and Fable-level performance · Developers integrating Opus 5.5 with lower prices and Fable-level performance

What happens next

  • Check the documented access requirements and test Opus 5.5 with lower prices and Fable-level performance against the workflow it would replace before changing a production integration.

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What happened after the announcement

Anthropic’s newest model, Opus 5.5, was released on Tuesday, setting a new state-of-the-art in coding and knowledge work performance, according to the company.

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This fresh brief is based on concrete independent reporting; a matching official statement is not yet available.

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Related signals

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What to check next

Reduce AI API costs without losing useful results

Measure workload, retries and accepted outputs before comparing models, batching or reusable prompts.

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