GitHub Copilot CLI v1.0.66

GitHub Copilot CLI v1.0.66 was released on .

Summary

GitHub Copilot CLI v1.0.66 now supports Claude Opus 4.8 Fast for smarter AI assistance and introduces a sleeker terminal experience with a non-blinking cursor that restores your settings when you exit. We've also improved how the tool handles large outputs and made the timelin...

Release Notes

2026-06-30 - Use a non-blinking block cursor during interactive sessions, restoring your terminal's default cursor on exit - Add support for Claude Opus 4.8 Fast and deprecate Claude Opus 4.6 Fast - MCP add/edit form accepts HTTP-style Key: value headers - Keep LSP servers from starting twice during startup - Avoid blocking commands that contain Windows-style path fragments - Let Copilot read output from and stop detached background shell commands - Large output handling now respects custom output directories and a disable setting - Prevent PR description generation from crashing on empty assistant responses - Render the timeline as a compact "highlight reel" with single-line tool and reasoning rows for all users - Add @ file and GitHub ref completions in relay sessions - Show the correct session age when filesystem birthtime is missing - Prevent duplicate final assistant messages for GPT models - Terminal title updates work in more terminals - Show a (sandboxed) badge on compact Search timeline entries - Git commands work in sandboxed linked worktrees - Show the current pull request link as a status-line item - Show quota snapshots for WebSocket Responses requests - Show accurate Anthropic reasoning token counts - Let grep and glob retry blocked searches after sandbox approval - Format terminal titles with the session title and GitHub Copilot suffix - Skip synchronized output under tmux to avoid mouse pointer flicker - Session limits now apply across the current conversation, reset on /clear, and use the sessionLimits option key. - Hide excluded built-in agents from agent selection - BYOK sessions using Anthropic models no longer hit HTTP 400 errors from adaptive-thinking mismatches — neither from injecting adaptive thinking on models that don't support it, nor from sending standard thinking to models that require adaptive. Thinking-mode selection for dual-mode models is unchanged. - Allow skills with the same name from different plugins to coexist - Let integratio

View original release

Other Recent GitHub Copilot CLI Releases

All GitHub Copilot CLI releases · All AI coding tool releases on Havoptic