Claude Haiku 5.5 in GitHub Copilot
GitHub made Claude Haiku 5.5 generally available across Copilot surfaces for subagents, quick edits, and terminal tasks, after early tests matched Sonnet 5 on many coding tasks with fewer tokens and steps.
Teams running assistants on routine coding work should test Haiku 5.5 in their model picker because early results match Sonnet output with fewer tokens, which lowers cost before they commit usage-based spend.