Migrate from OpenAI Codex to Claude Code
43+ public pull requests on GitHub since Oct 2024, in 40 repos, say they move a project from OpenAI Codex to Claude Code. 34+ 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 "OpenAI Codex to Claude Code".
When they moved
Pull requests a month. Most are recent: 43 in the last 13 months against 0 before. The busiest month was Jun 2026 (7). GitHub returned only the newest 500 matches, so earlier months are undercounted.
The newest 20 pull requests
- docs(blog): enlarge pro plan reopening meme in Codex to Claude Code posthon454/hon454.github.io · 2026-10-01
- docs(blog): remove image captions from Codex to Claude Code posthon454/hon454.github.io · 2026-10-01
- docs: add Codex to Claude Code desktop experience posthon454/hon454.github.io · 2026-10-01
- Add OpenAI Codex plugin marketplace to Claude Code project settingsbrandohermoso47-rgb/cliente-vault-web-app · 2026-10-01
- fix(agents): hold Codex to Claude Code's parity — kept to the browser, reading images, follow-ups that reach the model on both, and a Claude run that cannot silently lose its toolsimshaikot/browsentic · 2026-09-27
- Port Codex Mobile for Termux to Claude Codehoangkien1703/claude-mobile-termux · 2026-09-25
- Rename to WoW AI and add Codex and Grok next to Claude Codechelinho139/wow-ai · 2026-09-24
- feat: Codex as a second agent next to Claude CodeViperwow/erindi · 2026-09-24
- Switch from Codex to Claude Code and define engineer development goalsyabukichi-lab/incident-ai-assistant · 2026-09-13
- Name the Codex marketplace b-open-io to match Claude Code [OPL-4679]b-open-io/claude-plugins · 2026-09-11
- feat(codex): offer Codex to Claude Code as a subagentClubria/riabuild · 2026-09-04
- Swap the analysis engine from Codex CLI to Claude Code CLIhele211/voice2note · 2026-08-25
- Port Codex app-development-orchestrator skill to Claude Codekomatsu-dev-jp/seller-assistant · 2026-08-18
- docs: add the Codex badge next to Claude Codeniqibiao/unity-csharpconsole · 2026-08-15
- docs: add the Codex badge next to Claude Codeniqibiao/unity-cli-skill · 2026-08-15
- feat(claude): port remaining Codex skills to Claude Code pluginsastropham1808/astro-agent-skills · 2026-08-11
- fix(codex): wire SessionEnd and UserPromptSubmit to match Claude Codejasonku09/altitude-skills · 2026-08-06
- feat: bring Codex integration to parity with Claude Codedarkroomengineering/programa · 2026-07-20
- New Codex security tips & updates to Claude Code security tips.bendyarm/acl2-mcp · 2026-07-18
- feat: add /codex:import skill to hand off codex sessions to claude codenozomiishii/dotfiles · 2026-07-13
OpenAI Codex and Claude Code, side by side
Among makers' products we track for AI coding assistants: OpenAI Codex 136, Claude Code 735.
At developers 1 seat, OpenAI Codex costs $8.00/mo (ChatGPT Go) and Claude Code $20/mo (Pro), at list prices.
Where else OpenAI Codex projects go
GitHub Copilot22 PRs
Cursor12 PRs
OpenCode8 PRs
Where else Claude Code's newcomers come from
- Cursor48 PRs
- GitHub Copilot40 PRs
- OpenCode28 PRs
Questions
How many projects have moved from OpenAI Codex to Claude Code?
43+ public pull requests on GitHub since Oct 2024, in 40 repos, have a title saying they move from OpenAI Codex to Claude Code.
Do projects move back from Claude Code to OpenAI Codex?
Yes: 34+ pull requests over the same time go from Claude Code to OpenAI Codex, against 43+ from OpenAI Codex to Claude Code.
Is Claude Code cheaper than OpenAI Codex?
At developers 1 seat: OpenAI Codex $8.00/mo (ChatGPT Go), Claude Code $20/mo (Pro), at list prices.
GitHub search, Oct 2026 (as of 2026-10-02).