Migrate from Claude Code to OpenAI Codex
34+ public pull requests on GitHub since Oct 2024, in 33 repos, say they move a project from Claude Code to OpenAI Codex. 43+ go the other way. Real code changes by developers in general, not only makers — read from the titles, so a PR is counted when its title says "Claude Code to OpenAI Codex".
When they moved
Pull requests a month. Most are recent: 34 in the last 13 months against 0 before. The busiest month was Aug 2026 (8). GitHub returned only the newest 500 matches, so earlier months are undercounted.
What they move
The part of the app a pull request's title names — "migrate auth from Claude Code to OpenAI Codex". Many titles name none, so the shares don't add up to 100%.
- Deployment15% 5 of 34
- Models and prompts12% 4 of 34
- Storage9% 3 of 34
The newest 20 pull requests
- Migrate repository guidance from Claude Code to Codexyuru-sha/fuji-calendar · 2026-10-02
- chore: migrate Claude Code workflow to CodexJoycai/Jellyfin-Media-Management-Tool · 2026-10-01
- feat: add live Claude Code to Codex context handoff pathavaargsh/agent-control-plane · 2026-10-01
- Migrate project agent workflow from Claude Code to CodexJoycai/Joycai-Image-Ai-Toolkits · 2026-10-01
- Add post on switching from Claude Code to Codexnninnis/nninnis.github.io · 2026-09-22
- Confine Claude Code runs to the grants Codex getsdark-factory-build/dark-factory · 2026-09-20
- Prototype Claude Code delegation to metered native Codex workersgremlord/gremlord · 2026-09-17
- chore: migrate Claude Code skills to Codexbentleypark/aiwatch · 2026-09-04
- Change first slide title from Claude Code to Codexnarze/claude-code-in-the-cloud-slides · 2026-08-26
- Migrate Claude Code configuration to Codexrjdellecese/confect · 2026-08-24
- chore: migrate Claude Code workflows to Codexayutaz/vokra · 2026-08-17
- Migrate Claude Code configuration to Codex and move skills to `.agents`rjdellecese/confect · 2026-08-17
- feat: add Claude Code to Codex vision bridge for DeepSeekjiuchibanwanfan-creator/agent-vision-toolkit · 2026-08-13
- Bring the full Claude Code hook set to Codextrailhq/Graft · 2026-08-12
- fix: bridge Claude Code illustration tasks to CodexQiliangLi/technical-briefing-skill · 2026-08-11
- Port Claude Code agents to Codexjpatrickb/jobtracker · 2026-08-01
- Document the Claude Code to Codex development workflowrajarshiroydev/goatsbattle · 2026-07-22
- fix: lazily route Claude Code MCP tools to Codexlettrlabs/CC-Adapter · 2026-07-18
- Add Claude Code to codex workspace imageboxp/arch · 2026-07-04
- Port Claude Code Game Studios to Codex Game StudiosCipher-85/Codex-Game-Studios · 2026-07-03
Claude Code and OpenAI Codex, side by side
Among makers' products we track for AI coding assistants: Claude Code 735, OpenAI Codex 136.
At developers 1 seat, Claude Code costs $20/mo (Pro) and OpenAI Codex $8.00/mo (ChatGPT Go), at list prices.
Where else Claude Code projects go
OpenCode44 PRs
GitHub Copilot28 PRs
Cursor10 PRs
Where else OpenAI Codex's newcomers come from
- Cursor16 PRs
- GitHub Copilot14 PRs
- OpenCode12 PRs
Questions
How many projects have moved from Claude Code to OpenAI Codex?
34+ public pull requests on GitHub since Oct 2024, in 33 repos, have a title saying they move from Claude Code to OpenAI Codex.
Do projects move back from OpenAI Codex to Claude Code?
Yes: 43+ pull requests over the same time go from OpenAI Codex to Claude Code, against 34+ from Claude Code to OpenAI Codex.
What do people move first from Claude Code to OpenAI Codex?
Of the pull request titles, 15% name deployment, 12% name models and prompts.
Is OpenAI Codex cheaper than Claude Code?
At developers 1 seat: Claude Code $20/mo (Pro), OpenAI Codex $8.00/mo (ChatGPT Go), at list prices.
GitHub search, Oct 2026 (as of 2026-10-02).