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Claude Opus 5.5
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September 22, 2026latest tracked

LATEST DEVELOPMENT

Claude Opus 5.5 is now available in GitHub Copilot

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… The post Claude Opus 5.5 is now available in GitHub Copilot appeared first on The GitHub Blog .

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