⚡️ @AnthropicAI's Claude Haiku 5.5 is now generally available in GitHub Copilot.

It's a lightweight model designed for fast, high-volume work like subagents, quick edits, and terminal tasks. ➡️ Our early testing showed that it matched Claude Sonnet 5 on many coding tasks while using significantly fewer tokens and steps. Try it out in the GitHub Copilot app, CLI, or @code.