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Claude Opus 5.5

Claude Opus 5.5

The first model in our new Claude 5.5 family.

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Claude Opus 5.5 leads in agentic coding and knowledge work, and costs 40% less to run than Opus 5 on typical workloads.

Claude Opus 5.5 makers

Here are the founders, developers, designers and product people who worked on Claude Opus 5.5

Ephraim TekleEngineer @Anthropic
Claude Opus 5.5Claude Opus 5.5
Kevin GarciaHead of PMM @ Anthropic
Claude Opus 5.5Claude Opus 5.5