⚡️ @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.
https://github.blog/changelog/2026-10-07-claude-haiku-5-5-in-github-copilot/