
OpenAI pairs an open-source local Codex CLI with an isolated cloud container agent inside ChatGPT: assign five bugfixes, unit-test backfills, or dependency upgrades simultaneously from your browser or phone and review the resulting GitHub PRs.
Ranked #9 on "Claude Code vs. Cursor vs. GitHub Copilot? Top 10 Best AI Coding Assistants & IDEs (2026)". Cast your vote to back or challenge this spot.
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