On September 29, 2026, OpenAI announced Sign in with ChatGPT at DevDay. Apps that support it let you log in with your ChatGPT account, and if you have ChatGPT Plus or Pro, use your plan for the app's AI features instead of paying for a separate subscription.
It launched with 16 partner apps, spread across announcements, docs and social posts. There was no single place to see which apps support it, so we built one: loginwith.ai.
What's on the site
- The directory: every app that supports Sign in with ChatGPT, grouped into coding agents, agents, app builders, and workspaces and platforms. Each app has its own page with what it does, its status, and a link to try it.
- The developer guide: how Sign in with ChatGPT works under the hood (OAuth 2.0 with PKCE), who can integrate it today, working Next.js code, and how AI requests are billed to the user's plan.
- Submit an app: if an app supports it and isn't listed, tell us. We check every submission before it goes live.
The launch apps
- Coding agents: Amp, Conductor, Devin, Kilo Code, OpenCode, Pi, T3 Code, Vorflux, Warp
- Agents: Hermes Agent, Hyperagent, OpenClaw
- App builders: Dactyl, and Lovable (coming soon)
- Workspaces and platforms: Notion, Vercel
What it means for you
If you already pay for ChatGPT Plus or Pro, you don't need a second AI subscription for these apps. Sign in with your ChatGPT account, choose to use your plan, and eligible usage counts toward your ChatGPT limits. You can manage that usage in your ChatGPT settings.
For developers
Two paths exist today. Websites and hosted apps are in a limited trial for selected partners: you join through OpenAI's interest form. Open-source and locally run apps can integrate now, without approval or a client secret. The developer guide covers both.
What's next
More apps will add support; OpenAI's partner list is already growing. We'll keep the directory current, and we're watching whether other AI providers open up similar sign-in. If you build or use an app that supports Sign in with ChatGPT, submit it, and if something is wrong or missing, use the feedback button on any page.
loginwith.ai is an independent directory, not affiliated with OpenAI. Sources: OpenAI Help Center, OpenAI developer docs.