GitHub Copilot CLI Adds Plan Mode and GPT-5.2-Codex in Major Update
Rebeca Moen Jan 21, 2026 22:20 GitHub Copilot CLI introduces plan mode for collaborative coding, GPT-5.2-Codex model, and infinite session support through auto-compaction features. GitHub shipped a substantial update to Copilot CLI on January 21, 2026, introducing plan mode—a feature that lets developers collaborate with the AI before any code gets written. The update also...
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