GitHub Copilot CLI v1.0.55

GitHub Copilot CLI v1.0.55 was released on .

Summary

2026-05-28 - Free and Student plan users on token-based billing are restricted to Auto model selection, with an explanation shown in the model picker - Report Claude thinking (reasoning) tokens in ...

Release Context

  • This was the 98th GitHub Copilot CLI release of 2026 tracked by Havoptic.
  • It shipped 4 days after GitHub Copilot CLI v1.0.54 (May 24, 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

2026-05-28 - Free and Student plan users on token-based billing are restricted to Auto model selection, with an explanation shown in the model picker - Report Claude thinking (reasoning) tokens in session usage summaries - Add support for Claude Opus 4.8 - Loading spinner no longer hangs forever when launching in an untrusted folder - MCP server configuration form saves the latest typed value when pressing Ctrl+S - Show per-MCP-server token usage in /mcp and break out MCP tool tokens in /context - Custom agents and skills are now discovered recursively in subdirectories - Add permissions.disableBypassPermissionsMode setting to prevent enabling allow-all/yolo mode - Update model selection behavior for select subscription plans - The exitplanmode tool is only offered to the model while the session is in plan mode - Native binary crash (e.g. SIGSEGV) now falls through to the JavaScript fallback instead of silently exiting - Add /autopilot <objective> to keep autopilot focused, with /goal as an alias - Detect PowerShell 7 correctly when pwsh.exe is installed as a Microsoft Store App Execution Alias - Sessions with zero-sized CAPI billing batches resume correctly - Cell-based terminal renderer is now enabled for all users by default - Show a warning when remote controlled sessions are disabled by organization policy - Extension log files are now captured per extension and surfaced in the extensionsmanage tool to help diagnose failures - Project extensions in .github/extensions are now discovered in non-git (folder-backed) workspaces - Allow /statusline and /theme commands to run while the agent is executing - MCP configuration now opens in its own dedicated screen, with scrollable server and tool lists when content exceeds the visible area - Hook progress streaming shows real-time status messages from long-running hooks in the timeline - pluginDirectories on session.create and session.resume RPC: SDK clients can mount Open Plugins-format directories per session. - Delete remote sessions directly from the session picker - Schedule manager hint bar text no longer wraps over dialog borders when entries are added - copilot update and copilot version authenticate release API requests to avoid rate limit errors in shared-NAT environments - Diff view keyboard shortcut hints display correctly when toggling between unstaged and branch diff modes - Clipboard paste works correctly on Wayland compositors that do not support wlr-data-control (e.g. GNOME/Mutter) - Interactive shell tool preserves parent terminal color settings so diff tools and other programs render with full color - Canvas tools with optional object input schemas open correctly without validation errors - Extension subprocesses no longer fail with "Invalid command format" when forked from an older CLI version - Settings migration preserves user data when legacy snakecase keys exist from older CLI versions - Support owner/reporef syntax when adding plugins from the marketplace - Feedback dialog and /skills help text use Copilot-consistent log paths and terminology - Progress indicators integrate natively with tmux 3.6b pane progress state - --plugin-dir skills now take precedence over personal-home (~/.copilot, ~/.agents) skills with the same name. Order is now project > plugin-dir > personal > custom. - Show a helpful message when remote controlled sessions are disabled by organization policy - Reasoning token count now shown in session token summary for all users - Terminal bell no longer sounds on turn completion unless explicitly enabled via config - /resume picker no longer shows blank rows for sessions closed before sending a message - Aborting a session no longer leaves the UI stuck in a Cancelling state when Task tool agents are running - votememory tool calls are throttled per response and per interaction to prevent runaway voting bursts - Upward auto-scroll now engages when dragging mouse selection past the top of the timeline - Clipboard correctly copies CJK and supplementary-plane Unicode characters on Windows - Increase selection background contrast across all color themes for better visibility - /env now shows loaded extensions with their status and source - Extensions launch correctly when the CLI runs as a single-executable application (SEA)

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