# Claude Sonnet 5.5 in GitHub Copilot By Steven Van ยท 2026-09-28 Available on Copilot Pro, Pro+, Max, Business and Enterprise, with GitHub reporting fewer steps and tokens than Sonnet 5 on coding tasks. Claude Sonnet 5.5 is now generally available in [GitHub]() Copilot, and the [supported models list]() now includes it. GitHub describes it as Anthropic's newest Sonnet model, designed for well-scoped everyday work like building features and fixing bugs. In GitHub's early testing, Sonnet 5.5 matched Claude Sonnet 5 on coding tasks while using significantly fewer steps, tokens and tool calls, and it finished tasks noticeably faster. It is billed at provider list pricing under usage-based billing. - **Plans:** Copilot Pro, Pro+, Max, Business and Enterprise. - **Where:** the model picker in Visual Studio Code, Visual Studio, Copilot CLI, the Copilot coding agent, the GitHub Copilot app, github.com, GitHub Mobile (iOS and Android), JetBrains IDEs, Xcode and Eclipse. - **Extended capabilities:** the docs list Sonnet 5.5 among the models with a 1 million token context window (Visual Studio Code and Copilot CLI only) and configurable reasoning levels (Visual Studio Code, Copilot CLI and Copilot cloud agent). Larger context or higher reasoning uses more AI credits. Rollout is gradual, so the model may not appear in the picker straight away. On Business and Enterprise plans, administrators can manage access through the model policy in Copilot settings. Under default model enablement, new models are switched on automatically unless an administrator has turned off the global default or disabled this model. ![GitHub]() GitHub Where the world builds software โ€” Git hosting, pull requests, issues, Actions CI/CD, and Copilot, free for public and private repos. [View GitHub โ†’]() [Read the original announcement โ†’]() [Read Claude Sonnet 5.5 in GitHub Copilot on Creators Toolbox]() --- Canonical source: https://creatorstoolbox.com/blog/github-claude-sonnet-5-5-in-github-copilot