Claude Opus 5.5 is now available in GitHub Copilot

UpdateSep 22, 2026VerifiedAdded Sep 22, 2026

Claude Opus 5.5, Anthropic’s newest Opus model, is now available in GitHub Copilot. You can use it for agentic coding, long-running agentic tasks, and knowledge work. In early testing, Opus 5.5 resolved tasks comparably to Claude Opus 5 while using significantly fewer steps and tokens. It also quickly recovered from errors in multistep tasks.

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Read GitHub's release notes

https://github.blog/changelog/2026-09-22-claude-opus-5-5-is-now-available-in-github-copilot

Summaries of vendors' own notes. Product names and logos belong to their owners; logos via logo.dev.

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