Allison covers the general availability of Anthropic’s Claude Sonnet 4.5 in GitHub Copilot, highlighting expanded model access for Copilot users and setup instructions for various IDEs.

Claude Sonnet 4.5 Now Available in GitHub Copilot

Anthropic’s Claude Sonnet 4.5 language model is now generally available to users of GitHub Copilot Enterprise, Copilot Business, Copilot Pro, and Copilot Pro+.

Accessing Claude Sonnet 4.5

You can access Claude Sonnet 4.5 within GitHub Copilot Chat across the following environments:

github.com
GitHub Mobile
Visual Studio Code
Visual Studio
JetBrains IDEs
Xcode
Eclipse

Use the chat model picker to select Claude Sonnet 4.5 in agent, ask, or edit modes. If the model isn’t immediately available, check back later as rollout continues.

Enabling Access

For Organizational Plans: Copilot Business and Enterprise admins must enable the Claude Sonnet 4.5 policy in Copilot Chat and IDE settings. Once enabled, users in that organization will see the model option in supported IDEs.
For Individual Plans: Select Claude Sonnet 4.5 from the model picker in any supported IDE and confirm the one-time prompt.

Copilot Coding Agent

The Copilot coding agent now uses Claude Sonnet 4.5 across all subscription types, regardless of Copilot Chat and IDE settings.

Further Information and Feedback

For a full overview of available models in GitHub Copilot, visit the official documentation. For feedback and discussion, join the GitHub Community Copilot Conversations.

This post appeared first on “The GitHub Blog”. Read the entire article here