Claude Haiku 5.5, Anthropic’s lightweight model, is now generally available in GitHub Copilot.
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Cloud updates in 2026-w41
Introduces a purpose‑built model for detecting leaked secrets in code and AI‑generated content
Local sandboxing for GitHub Copilot is now generally available across the CLI, Copilot app, and VS Code sessions using Agent Host.
Added a new `/model` command to list supported local models in the Copilot CLI
Fix restores accurate agent activity and lines of code metrics in Copilot usage reports
Introduces stacked pull requests as a generally available feature
Add AI Scan enablement status to the security overview coverage view for organization and enterprise administrators.
Secret scanning now detects new secret types from Lovable Labs, Pydantic Services Inc., and Supabase.