GitHub adds Claude Haiku 5.5 to Copilot in a gradual rollout

GitHub announced general availability for Anthropic’s Claude Haiku 5.5 in Copilot, though eligible users may have to wait for it to appear. The company says access is rolling out gradually.

The announcement lists Copilot Pro, Pro+, Max, Business and Enterprise as eligible plans. Users can choose Haiku 5.5 in the model picker across clients including Visual Studio Code, Visual Studio, Copilot CLI and JetBrains IDEs, as well as GitHub’s website and mobile apps.

For organizations, availability also depends on policy settings. Business and Enterprise administrators can manage the model through Copilot’s model policy. GitHub says new models are enabled automatically by default, unless an administrator has switched off that global setting or explicitly disabled the model. Usage is billed at provider list pricing under usage-based billing.

GitHub positions Haiku 5.5 as a lightweight option for fast, high-volume work: subagents, quick edits and terminal tasks. It also says early testing found the model matched Claude Sonnet 5 on many coding tasks while using significantly fewer tokens and steps—a performance comparison attributed to GitHub’s testing, not an independently established result.