copilot

Copilot CLI v1.0.7: gpt-5.4-mini & Session Fixes

Copilot CLI 1.0.7 adds gpt-5.4-mini, fixes session corruption bugs, and introduces experimental SDK APIs for managing skills and MCP servers.

TL;DR

gpt-5.4-mini model now available in the model picker
Session resume no longer fails on pre-1.0.6 sessions
Better accessibility: improved color contrast and visual message differentiation
New SDK session APIs for managing skills, MCP servers, and plugins

gpt-5.4-mini support — Pro and trial users can now select this model in the picker alongside their other entitled models
Customize mode for system messages — Override system prompts at the section level for finer control over agent behavior
Double-Esc input handling — Clears text when present, triggers undo when empty, with a hint after the first Esc
Branch indicator enhancements — Unstaged (*), staged (+), and untracked (%) changes now clearly distinguished in the header
Experimental SDK session APIs — List and manage skills, MCP servers, and plugins with optional auto-discovery from your working directory
subagentStart hook — Fires when a subagent spawns, lets you inject additional context into its prompt
Improved color contrast — Better readability across CLI themes and accessibility compliance
User message styling — Subtle background color differentiates user messages from assistant responses
Tab bar refinement — Selected tabs now use compact [label] style with cleaner spacing

Session resume no longer fails with 'Session file is corrupted' for sessions created before 1.0.6
CLI restart no longer re-sends the -i/--interactive prompt to the new session
Auto-update edge case on Windows that could leave incomplete packages

Update with: npm install -g @github/copilot-cli@latest