Claude Haiku 5.5 is now generally available in GitHub Copilot.
AIAnthropic's Claude Haiku 5.5 is now generally available in GitHub Copilot, a lightweight model built for fast, high-volume work such as subagents, quick edits, and terminal tasks. GitHub's early testing found it matched Claude Sonnet 5 on many coding tasks while using significantly fewer tokens and steps. It can be used in the GitHub Copilot app, CLI, or @code.





