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Claude Sonnet 5.5 in GitHub Copilot

Claude Sonnet 5.5, Anthropic’s newest Sonnet model, is now generally available in GitHub Copilot. It is designed for well-scoped everyday work like building features and fixing bugs. In our early… The post Claude Sonnet 5.5 in GitHub Copilot appeared first on The GitHub Blog.

Claude Sonnet 5.5 in GitHub Copilot
Primary source github.blog ↗

Published September 28, 2026 · Category: AI Create

Overview

Claude Sonnet 5.5, Anthropic’s newest Sonnet model, is now generally available in GitHub Copilot. It is designed for well-scoped everyday work like building features and fixing bugs. In our early testing, Sonnet 5.5 stood out for its efficiency, matching Claude Sonnet 5 on coding tasks while using significantly fewer steps, tokens, and tool calls. It also finished tasks noticeably faster.

Details

This model is billed at provider list pricing under usage-based billing. See Models and pricing for GitHub Copilot for details.

Availability in GitHub Copilot

Claude Sonnet 5.5 is available to Copilot Pro, Pro+, Max, Business, and Enterprise users. You can select the model in the model picker in:

  • Visual Studio Code
  • Visual Studio
  • Copilot CLI
  • GitHub Copilot coding agent
  • GitHub Copilot app
  • github.com
  • GitHub Mobile on iOS and Android
  • JetBrains IDEs
  • Xcode
  • Eclipse

Rollout will be gradual. Check back soon if you don’t see it yet.

Enabling access

Copilot Enterprise and Copilot Business plan administrators can manage access to Claude Sonnet 5.5 through the model policy in Copilot settings. Under default model enablement, new models are automatically enabled unless an administrator has turned off the global default or explicitly disables this model.

Learn more

To explore all models available in GitHub Copilot, see our documentation on models and get started with Copilot.

Share your feedback

Join the GitHub Community to share your feedback.

The post Claude Sonnet 5.5 in GitHub Copilot appeared first on The GitHub Blog.

Source

Originally published at github.blog.

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