Sign in with ChatGPT: Plan Limits in 16 Tools

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Sign in with ChatGPT is, after OpenAI DevDay 2026, two things at once: logging into other services with your ChatGPT account and the ability to spend your Plus or Pro plan limit in 16 partner tools, including Devin, Notion and Vercel. You don’t need an API key. We explain how it works, how to set limits for each app, what data partners receive about you, and how to disconnect everything.

What OpenAI Announced

OpenAI released Sign in with ChatGPT in beta in July 2026, initially only as a login method (according to The New Stack, partners included Airtable, GitLab, HubSpot, Notion, Supabase and Vercel). On DevDay, September 29, they added the ability to spend subscription limits in external tools. The rules from the official summary: login (“identity”) works globally, and plan limits can be spent by Plus and Pro users in tools that support it. We cover the rest of that evening’s announcements in our live coverage of OpenAI DevDay 2026.

Full List of 16 Partners

We compiled this list from OpenAI’s help center and documentation at learn.chatgpt.com (as of September 29, 2026):

The help center adds that anyone can connect their account to supported open source tools, while commercial tools require Plus or Pro. Partners can also make this option available only in selected plans of their own. Example from The New Stack: Dactyl allows you to connect ChatGPT in its Builder plan at $20 per month, but compiling apps or generating icons still consumes Dactyl credits.

What This Means for You

If you pay for ChatGPT Plus ($20 per month) or Pro (from $100), you can use AI in partner tools without a separate token bill. Requests from apps consume the same pool as ChatGPT Work and Codex. You don’t get additional limits, you share what you have. If you use Codex intensively (we cover plans in our article on Codex in the cloud), a partner app can eat up your weekly allowance. The partner tool’s own subscription is paid separately.

How to connect an app according to the help center:

1. In the partner app, select Continue with ChatGPT or Sign in with ChatGPT.
2. Log in to the ChatGPT account you want to use. If you have multiple accounts or workspaces, check which one is active.
3. Review the data the app will receive, and separately decide on the Use your ChatGPT plan consent.
4. If you already have an account in that app, look for the ChatGPT option in its account or payment settings.

Login and plan usage are two separate consents. You can sign in with ChatGPT without giving the app your plan limit.

How to Control Usage

In ChatGPT, go to Settings > Usage. In the App limits section, each app has a Manage limits option where you set a weekly limit as a percentage of your total weekly plan usage. Two things are easy to miss:

• An app limit is a ceiling, not a reservation. It doesn’t set aside part of your plan for the app. The app can reach its limit when you still have usage left in ChatGPT.
• Credits after plan exhaustion are disabled by default. For an app to spend them, you must enable this separately, and the app limit must be set to 100%. If you have automatic credit purchase enabled, continued use may mean charges without separate notification.

When an app can’t use your plan or credits, according to OpenAI it doesn’t automatically switch to another paid option. Logging in again doesn’t restore spent limits. Our advice: start with 10-20% for an app you don’t know yet, and raise the limit after a week when you see its actual usage.

Privacy: What Partners Receive

When you log in, the app receives three pieces of data: name, email address and profile picture. On the technical side, this is standard OpenID Connect with openid, profile and email scopes. The app identifies you by a permanent sub identifier. According to OpenAI, sharing your plan doesn’t give the app access to your conversations or memory in ChatGPT and doesn’t transfer an API key.

However, there are limits to this protection:

• Content you enter in the partner app goes to the partner and is subject to their privacy policy. A plugin or app may request additional permissions that you approve separately.
• The usage panel in ChatGPT doesn’t show what exactly you did in the app. For disputed usage, you need to ask the partner.
• Disconnecting an app doesn’t delete data it already received from you. You must ask the partner to delete it.

We cover more about business data in OpenAI services in our article on OpenAI Private Intelligence.

How to Disconnect an App

1. In ChatGPT, open Settings > Security and login.
2. In Login connections, select Sign in with ChatGPT.
3. Select the app and in Manage connection click Disconnect, then confirm.

Logging out of the app itself doesn’t disconnect it from ChatGPT and doesn’t revoke consent to use your plan.

For Developers

Website login uses Authorization Code flow with PKCE and OpenID Connect. Plan limit spending is currently available for open source and locally run applications. Companies with paid or hosted apps apply through a form. The documentation lists preview limitations: requests to the Responses API must have store: false and stream: true, and image generation, file search, Code Interpreter, native computer use and hosted MCP are not supported. We describe managed agents with computer use in our article on Agents API. Plugins that can use the same login are covered in our article on ChatGPT plugins after DevDay.

Frequently Asked Questions

Does Sign in with ChatGPT work worldwide?

Yes. According to OpenAI, login works globally, and spending plan limits depends on your plan (Plus or Pro) and whether the app supports it.

Can I use a Business plan in Notion or Devin?

Not through this program. Plan limit spending is available for Plus and Pro. On other plans you can only log in with your ChatGPT account.

Can partners see my ChatGPT conversations?

No. They receive your name, email and profile picture. Sharing your plan doesn’t give access to conversations or memory.

What happens when an app exhausts its limit?

It stops using your plan until the limit resets. It will only spend credits if you enable that yourself and set its limit to 100%.

Kinetyra