Migrate from OpenAI API to Claude
127 public pull requests on GitHub since Oct 2024, in 119 repos, say they move a project from OpenAI API to Claude. 88 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 API to Claude".
When they moved
Pull requests a month. Most are recent: 120 in the last 13 months against 7 before. The busiest month was Mar 2026 (20).
What they move
The part of the app a pull request's title names — "migrate auth from OpenAI API to Claude". Many titles name none, so the shares don't add up to 100%.
- API and functions28% 36 of 127
- Models and prompts18% 23 of 127
- Storage2% 3 of 127
The newest 20 pull requests
- Migrate AI provider from OpenAI to Anthropic Claudesawthunaing/stn-job-hunting-dashboard-with-ai · 2026-10-01
- Preserve readable context when switching owned OpenAI to ClaudeJJLiebig/codex · 2026-10-01
- Add OpenAI Codex plugin marketplace to Claude Code project settingsbrandohermoso47-rgb/cliente-vault-web-app · 2026-10-01
- Switch Wardrobe from OpenAI to Claudenjarrar/wardrobe-najeeb · 2026-09-28
- Switch receipt extraction from OpenAI to Claudebelindahbl/receipt-telegram-bot · 2026-09-26
- Switch AI copy from OpenAI to Claude Haiku 4.5fareeha-s/shouldve-walked · 2026-09-26
- Phase 1: Switch AI provider from OpenAI to Anthropic Claudeanfaznil/tabletalk-ai · 2026-09-23
- fix(thinking): route OpenAI and level-based reasoning models to claude-adaptive on Claude endpointshkbulbul/polyrouter · 2026-09-23
- Switch FAQ replies from OpenAI to Anthropic Claudeimranaisolutions/Agentic-Ai · 2026-09-23
- Switch AI provider from OpenAI to Claude, and hand redirects to AJR Core (4.1.0)andrew-ajrwebdesign/ai-seo-assistant · 2026-09-22
- Switch from OpenAI to Anthropic ClaudeAnirudhmen94/rfx-crew-aerchain · 2026-09-20
- Switch Oracle AI from OpenAI to Anthropic Claude APISikul25/Degaja-2.0 · 2026-09-19
- fix(sse): read Responses-style usage names in OpenAI to Claude streamingdiegosouzapw/OmniRoute · 2026-09-19
- home_agent: switch chat provider from OpenAI to Anthropic ClaudeKandlerLi/home-infra · 2026-09-18
- Move LLM calls from OpenAI to Claude; add analysis depth controlMia-mcsaatchi/self-service-toolkit · 2026-09-13
- Switch AI provider from OpenAI to Claudeworksahilca-jpg/Follow-up-app · 2026-09-02
- feat: migrate translate-devotional from OpenAI to Claudemarcelosouzaillumine/3-Minutes-for-Life · 2026-08-27
- Switch notice generation from OpenAI to Anthropic Claudeemg31795/lease-draft-ai · 2026-08-20
- fix(translator): convert OpenAI tool-result images to Claude image blocks (#9692)diegosouzapw/OmniRoute · 2026-08-19
- Migrate OpenAI to claude apithaivanlam/flashmind_project · 2026-08-19
OpenAI API and Claude, side by side
Among makers' products we track for LLM API: OpenAI API 728, Claude 252.
At input tokens 50 million tokens, output tokens 10 million tokens, OpenAI API costs $10/mo (GPT-6 Luna) and Claude $10/mo (Claude Haiku 5.5), at list prices.
Where else OpenAI API projects go
Gemini API178+ PRs
Groq50 PRs
DeepSeek21 PRs
Mistral AI9 PRs
Where else Claude's newcomers come from
- Gemini API108+ PRs
- Groq10 PRs
- DeepSeek8 PRs
Questions
How many projects have moved from OpenAI API to Claude?
127 public pull requests on GitHub since Oct 2024, in 119 repos, have a title saying they move from OpenAI API to Claude.
Do projects move back from Claude to OpenAI API?
Yes: 88 pull requests over the same time go from Claude to OpenAI API, against 127 from OpenAI API to Claude.
What do people move first from OpenAI API to Claude?
Of the pull request titles, 28% name API and functions, 18% name models and prompts.
Is Claude cheaper than OpenAI API?
At input tokens 50 million tokens, output tokens 10 million tokens: OpenAI API $10/mo (GPT-6 Luna), Claude $10/mo (Claude Haiku 5.5), at list prices.
GitHub search, Oct 2026 (as of 2026-10-02).