Modelpeers

Claude Opus 4.7

Model at Anthropic

Breaking change

Fast mode removed for Claude Opus 4.7

Requests to claude-opus-4-7 with speed fast now return an error rather than falling back to standard speed.

Who is affected:
Apps using fast mode on Claude Opus 4.7.
Action needed:
Move fast mode traffic to Claude Opus 5 or Opus 4.8.

Source

"Requests to claude-opus-4-7 with speed: "fast" now return an error; unlike Claude Opus 4.6, they do not fall back to standard speed."

Claude Platform release notes (API)

Published

Open the sourceplatform.claude.com

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