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[ARTICLE · art-155142] src=byteiota.com ↗ pub= topic=artificial-intelligence verified=true sentiment=↓ negative

Claude API 2026-10-21: Temperature Is Gone, and Even the Default Breaks You

Anthropic released Claude API version 2026-10-21, its first new API version in 3 years, which removes the temperature parameter entirely, according to byteiota. Even requests using default values now return 400 errors, and the report details every breaking change and how to migrate safely.

read1 min views1 publishedOct 22, 2026

Anthropic's first new API version in 3 years removes temperature entirely. Even default values return 400s. Here's every breaking change and how to migrate safely.

The post Claude API 2026-10-21: Temperature Is Gone, and Even the Default Breaks You appeared first on byteiota .

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