GitHub Copilot CLI v1.0.18

GitHub Copilot CLI v1.0.18 was released on .

Summary

2026-04-04 - New Critic agent automatically reviews plans and complex implementations using a complementary model to catch errors early (available in experimental mode for Claude models) - Session ...

Release Context

  • This was the 63rd GitHub Copilot CLI release of 2026 tracked by Havoptic.
  • It shipped 1 day after GitHub Copilot CLI v1.0.17 (April 3, 2026).

Shipped around the same time

Within 3 days of this release, other AI coding tools also shipped:

Compare GitHub Copilot CLI: vs Claude Code · vs OpenAI Codex CLI · vs Cursor · vs Gemini CLI · vs Kiro CLI · vs Devin Desktop · vs Antigravity CLI

Release Notes

2026-04-04 - New Critic agent automatically reviews plans and complex implementations using a complementary model to catch errors early (available in experimental mode for Claude models) - Session resume picker correctly groups sessions by branch and repository on first use - preToolUse hook permissionDecision 'allow' now suppresses the tool approval prompt - Add notification hook event that fires asynchronously on shell completion, permission prompts, elicitation dialogs, and agent completion

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