Claude Sonnet 5.5 becomes generally available in GitHub Copilot

Where Copilot users can select Sonnet 5.5

GitHub says Claude Sonnet 5.5 is generally available in GitHub Copilot for Pro, Pro+, Max, Business, and Enterprise users. It can be selected from the model picker in Visual Studio Code, Visual Studio, Copilot CLI, GitHub Copilot coding agent and app, github.com, GitHub Mobile on iOS and Android, JetBrains IDEs, Xcode, and Eclipse.

Rollout is gradual, so the model may not appear immediately for every eligible user. GitHub advises checking back if it is not visible yet.

Sources: Claude Sonnet 5.5 in GitHub Copilot - GitHub Changelog

Business and Enterprise access controls

Copilot Business and Enterprise administrators can manage access through the model policy in Copilot settings. GitHub says new models are automatically enabled under default model enablement unless an administrator has disabled the global default or explicitly disabled this model.

Sources: Claude Sonnet 5.5 in GitHub Copilot - GitHub Changelog

Usage-based billing and performance caveat

GitHub says Sonnet 5.5 is billed at provider list pricing under usage-based billing and directs users to its Copilot models and pricing information for details. The announcement does not state a specific price, so users should check that pricing reference before estimating cost.

GitHub describes its early testing as showing fewer steps, tokens, and tool calls than Sonnet 5 while matching it on coding tasks and finishing noticeably faster. These are GitHub's early-testing observations, not an independent benchmark.

Sources: Claude Sonnet 5.5 in GitHub Copilot - GitHub Changelog