GitHub Copilot CLI v1.0.89

GitHub Copilot CLI v1.0.89 was released on .

Summary

GitHub Copilot CLI v1.0.89 now lets you interact more naturally with inputs and commands, while adding support for Claude Code rule files and new models like claude-opus-5.5 for smarter assistance. We've also improved session management, shell command handling, and fixed sever...

Release Context

  • This was the 131st GitHub Copilot CLI release of 2026 tracked by Havoptic.
  • It shipped 6 days after GitHub Copilot CLI v1.0.88 (September 22, 2026).
  • GitHub Copilot CLI: ships every 5.5 days — 6 releases in the last month.

Why it matters: Copilot CLI now understands your code rules.

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 · vs Grok Build

Release Notes

2026-09-28 - Left-clicking supported askuser and elicitation form inputs focuses them and places the cursor at the clicked position - Add support for Claude Code rule files in .claude/rules as custom instructions - Sessions in the sidebar show a blue dot when they finished a turn you have not opened yet - Auto suggests a routing tier and lets you switch with a shortcut or click - Auto shows a quick feedback prompt after switching away to a manually selected model - MCP pre-registered OAuth clients honor configured oauthScopes. - In local sessions, Esc Esc in an empty chat input takes back a prompt whose turn the model has not started answering and removes it from the conversation - Add GPT-6 Sol and GPT-6 Luna to the model picker when available - Adding support for claude-opus-5.5 - Shell output no longer shows trailing command completion metadata. - Timeline output stops auto-following while text selection is active - server/tool and server/\ tool filters now match MCP tool names that contain a slash - Queue exit commands while an agent response is still running - Extensions no longer fail to load under enterprise managed settings while managed MCP policy is still being applied - Fixed Git failures in applications launched from CLI shells when empty environment variables are dropped, on Git 2.36 or newer. - Sessions sidebar saves opened and closed tabs as they change, rather than only on exit - Agent shell commands in sandbox can access session files and logs - Fix Auto tier selection to cycle correctly in /model and remove the unsupported Fast profile; a previously stored, exported, or resumed Fast preference now falls back to Balance instead of routing on it - Run wrapped gh and git commands, such as timeout 60 gh ..., correctly in sandboxed sessions - ACP sessions stay connected when clients pause reading large responses - Gemini models no longer fail every request with 400 invalid request body when an MCP server exposes a tool whose schema puts a type or properties beside anyOf, such as a nullable discriminated union - GitHub MCP tools connect correctly on first CLI startup after sign-in - Ask-user forms keep custom Other answers separate across questions - MCP config loading keeps valid workspace servers when sibling entries are invalid - Delete old sessions succeeds when run directly in the CLI - Claude requests above attachment size limits now recover automatically before sending. - Listing shells shows running shells first, so a shell still running in the background is no longer hidden behind a long list of finished ones - View tool honors line ranges when providers send flattened viewrange arguments - In local sessions, Up in an empty chat input recalls the pending message and leaves queued prompts in the queue - PR creation now follows repository pull request templates, preserving required sections and checklist structure. - Configure automatic indexed search activation with TGREPFILECOUNTTHRESHOLD - Direct plugin installs can now be enabled and disabled. One already recorded as disabled now stops loading; re-enable it with copilot plugin enable - Sandboxed commands on supported Windows versions can access localhost when Local network access is on - Autocomplete model IDs in /model and /model plan argument pickers - Show managed Connector consent progress with a copyable authorization URL during connect and reconnect.

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