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[ARTICLE · art-142325] src=developers.openai.com ↗ pub= topic=ai-products verified=true sentiment=· neutral

Sign in with ChatGPT

OpenAI published documentation for "Sign in with ChatGPT," a feature that lets users sign in with ChatGPT and apply their ChatGPT plan to eligible AI requests inside third-party apps. The documentation covers account registration and sign-in through successful Responses API requests, and the docs index is available at llms.txt with markdown versions of pages accessible by appending .md to the page URL.

read1 min views2 publishedSep 30, 2026
Sign in with ChatGPT
Image: Developers (auto-discovered)

Let users sign in with ChatGPT and use their ChatGPT plan for eligible AI requests in your app.

Get started #

Explore the documentation #

From account registration and sign-in to successful Responses API requests.

For the complete documentation index, see [llms.txt](https://developers.openai.com/llms.txt). Markdown versions of documentation pages are available by appending

.md to the page URL. Primary navigation

DocsOverview

  • Agent Builder #

  • Assistants API #

-   [Overview](https://developers.openai.com/api/docs/guides/agents-api/overview)   
-   [Quickstart](https://developers.openai.com/api/docs/guides/agents-api/quickstart)   
-   [API reference](https://developers.openai.com/api/reference/resources/beta/subresources/agents)   
-   [Architecture](https://developers.openai.com/api/docs/guides/agents-api/architecture)   
-   [Configuring Agents](https://developers.openai.com/api/docs/guides/agents-api/configuration)

  • Environments and sandboxes #

  • Tools and integrations #

-   [Multi-agent](https://developers.openai.com/api/docs/guides/agents-api/multi-agent)   
-   [Observability and usage](https://developers.openai.com/api/docs/guides/agents-api/observability)   
-   [Tracing](https://developers.openai.com/api/docs/guides/agents-api/tracing)   
-   [Errors and recovery](https://developers.openai.com/api/docs/guides/agents-api/errors)   
-   [Bedrock Managed Agents](https://developers.openai.com/api/docs/guides/agents-api/bedrock-managed-agents)

DocsSign in with ChatGPT

DocsSelect...

docs agent...

source & further reading
developers.openai.com — original article Driving growth on Google Play: The next era of subscriptions Build intelligent Android apps: In-app agentic workflows Turn your REST APIs into MCP tools with Google Cloud API Gateway
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