Copilot CLI: all versions and old releases

2026-04-20
- Rate limit error message now says "session rate limit" instead of "global rate limit"

2026-01-16
- Add & prefix shortcut for delegating prompts to run in background (equivalent to /delegate)
- Tab completion cycles correctly based on typed prefix, not completed text
- Allow users to configure the reasoning effort for gpt models
- MCP servers now start correctly for custom agents
- Shell commands now display error output when they fail
- Fixed bug causing model call failures after compaction in some scenarios
- Login flow respects OAuth slow_down interval and includes debug logging
- Custom agent discovery now follows symbolic links to agent definition files
- Add additional prompting for custom agent delegation
- Add /cd as an alias for /cwd command
- Files created by the CLI are available for @-mention
- Enable extended thinking for Anthropic Claude models
- Screen reader mode shows static text instead of animated spinners during login
- Selecting 'approve for session' now auto-approves pending parallel permission requests of the same type
- Reasoning view setting persists across sessions
- Provide clearer error messages when repository is not found or access is denied
- Inject repo memories in the prompt and add memory storage tool to remember facts across sessions
- Show delay time when Copilot reads shell output with a delay
- Support proxy URLs without scheme (e.g., localhost:9999)