Codex CLI Changelog
2 dated changes to Codex CLI that we have logged and sourced, newest first — pricing moves, launches, deprecations and incidents. The most recent is 2025-10-28.
Everything that has changed
- Launch
GitHub announces Agent HQ
GitHub reframed Copilot as a control plane: a mission-control surface in github.com for dispatching Copilot's own coding agent alongside third-party agents including Claude Code and Codex, all running under bot identities inside existing branch protections.SourceLogged in the coding agents comparisonAlso affects github copilotAlso affects claude codeAlso affects devin - Launch
OpenAI open-sources Codex CLI
Codex CLI shipped as an Apache-2.0 local agent, later rewritten in Rust with OS-level sandboxing — Seatbelt on macOS, Landlock on Linux. It remains the strongest containment story of any local harness on this page.SourceLogged in the coding agents comparison
How this changelog is kept
Events are written by hand and dated to the day the change took effect, not the day we noticed. Each one names the tools it affects, so a shared change — a cloud provider raising egress prices across four products — appears on every profile it touches rather than being duplicated four times.
Everything here also flows into the site-wide changelog, which is the cross-tool feed of what is moving in developer infrastructure pricing.