Claude Haiku 5.5 in GitHub Copilot github.blog
GitHub says Anthropic’s Claude Haiku 5.5 is generally available in Copilot for Pro, Pro+, Max, Business and Enterprise users, with a gradual rollout across supported IDEs, GitHub.com, mobile and Copilot tools. GitHub says early tests found it matched Claude Sonnet 5 on many coding tasks while using fewer tokens and steps; usage is billed at provider list prices.