Claude Opus 5.5
ModelThe high-capability model in Anthropic's Claude 5.5 family.
- Sep 22, 2026
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Releases
Sep 22, 2026Claude Opus 5.5 releasedModel release
Anthropic released Claude Opus 5.5, the first model in the Claude 5.5 family, with higher capability and lower operating cost than Opus 5.