PANews, October 22: According to ClaudeDevs, Anthropic has launched the Claude API version 2026-10-21, the first official release since 2023. The new version removes the temperature, top_p, and top_k parameters from the Messages API. Passing documents in an assistant turn or citations in a user turn will return a 400 error. Several deprecated Admin and Enterprise Analytics API fields have also been replaced.
Anthropic Launches New Claude API Version, Removes Sampling Parameters
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Summary
Anthropic has launched a new Claude API version, dated 2026-10-21, its first official release since 2023. The update removes sampling parameters such as temperature, top_p, and top_k from the Messages API. Passing documents in assistant rounds or citations in user rounds now triggers a 400 error. Certain Admin and Enterprise Analytics API fields have been replaced. These changes align with enterprise blockchain use cases and reinforce enterprise-grade security standards.
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