Sign in with ChatGPT: What Apps Get and How Plan Usage Works

Sign in with ChatGPT started in July 2026 as a simple login button. At OpenAI’s DevDay on September 29, it gained a second, more consequential job. Partner apps can now ask to draw on your ChatGPT subscription, so you pay for their AI features through the plan you already have.

That is convenient, and it also raises fair questions. What does the app see? Can it run up a bill? How do you take access back? This guide therefore answers each one, based on OpenAI’s help pages, its developer documentation and launch reporting. However, TheJusGrow has not tested the feature for this article.

What is Sign in with ChatGPT?

OpenAI calls Sign in with ChatGPT “an identity-provider sign-in option.” In other words, your ChatGPT account becomes a key for other services, so you skip creating a new username and password. So if you have ever used “Sign in with Google” or “Sign in with Apple”, the basic idea is the same.

OpenAI’s help centre says the identity option is available globally to signed-in ChatGPT users, including people in Enterprise organisations. However, the newer plan-usage feature has narrower eligibility, which we cover below.

What information does an app get when you sign in?

For a basic sign-in, OpenAI says the app receives minimal profile information. The table below also summarises its help documentation as of October 2026.

Shared with the app	Not shared through sign-in
Name	ChatGPT conversations
Email address	ChatGPT memory
Profile picture, if you have one	Files
	Tokens or billing information

Anything beyond that, OpenAI says, needs a separate, explicit authorisation. So an app cannot quietly read your chat history just because you logged in with ChatGPT. Of course, the app still holds whatever you type into it directly, under its own privacy policy.

Two permissions: signing in vs using your plan

The most important detail is that OpenAI treats these as separate permissions. Its developer documentation states plainly that “signing in and using your plan are separate permissions.” As a result, you can approve one and decline the other.

	Identity sign-in	Plan usage
What it does	Logs you in	Lets the app spend part of your ChatGPT allowance
Who can use it	Signed-in ChatGPT users	Plus and Pro subscribers
What the app gets	Name, email, profile picture	The right to run AI requests on your plan
Does it add allowance?	Not applicable	No; it shares the allowance you already have

Then, when an app asks for both, the consent screen lists each request on its own line. So read that screen rather than clicking straight through. Behind the scenes, the identity layer and the spending layer also use different OAuth scopes, according to an analysis by the sign-in company WorkOS.

What changed in September 2026?

The original July version was identity only. You could log in, and that was all. At DevDay, OpenAI added subscription sharing, along with clearer controls such as per-app caps, according to The New Stack.

The change matters because it shifts who pays for AI inside third-party apps. Previously, a coding tool or writing app either charged you its own subscription or asked for an API key. Now, an approved app can bill its AI requests to the ChatGPT plan you already pay for. For the app maker, that removes token costs. For you, it means one subscription can quietly power several tools, so tracking usage becomes your job.

Which apps support Sign in with ChatGPT?

Confusingly, two different partner lists exist. First, OpenAI’s help centre names Airtable, GitLab, HubSpot, Notion, Supabase and Vercel as initial partners for the sign-in option.

Second, The New Stack reports 16 launch partners for plan usage. Most are coding and agent tools: OpenCode, OpenClaw, Pi, T3, Hyperagent, Hermes Agent, Vorflux, Amp, Dactyl, Kilo Code, Warp, Conductor and Devin. Notion and Vercel also appear, while the list shows Lovable as coming soon. OpenAI has said it will “expand quickly” beyond that group, so check each app’s own help pages for current support.

Notice the slant toward developers. For now, Sign in with ChatGPT plan usage is mostly a way to power coding assistants. Still, Notion’s presence suggests everyday productivity apps could follow.

How do Sign in with ChatGPT usage limits work?

First, plan usage never creates extra allowance. Instead, it shares your existing ChatGPT Work and Codex allowance with the apps you approve. Here, then, is how the limits fit together, according to OpenAI’s documentation and The New Stack’s launch report.

• Per-app weekly caps. Specifically, you choose how much each app may use, from 10% to 100% of your weekly allowance.
• Hard stops. When an app hits its limit, included usage stops. In other words, it does not switch automatically to the partner’s own billing.
• Shared windows. WorkOS notes that Plus subscribers also share a five-hour usage window across all connected apps.
• Caps are not reservations. For example, setting a 50% cap does not set aside half your allowance for that app; it only limits it.

There is one trap worth knowing, though. WorkOS reports that paid credits can come into play only when an app’s cap is set to 100% and you have enabled credit use for your whole account. Therefore, if you also allow automatic credit purchases, heavy app use could cost money. Our editorial advice: keep caps below 100% unless you have a clear reason.

How to set limits and disconnect an app

Both controls live in ChatGPT’s settings rather than inside the partner app. Here are the steps from OpenAI’s documentation.

1. To cap an app: open ChatGPT Settings, go to Usage, then App limits, and choose a weekly percentage for each connected app.
2. To disconnect an app: open Settings, then Security and login, then Sign in with ChatGPT. Select the app and choose Disconnect.
3. To check the result: try the app again. After that, a disconnected app should no longer be able to use your plan.

Meanwhile, one practical caveat comes from WorkOS. It says OpenAI does not currently notify the app when you disconnect it in ChatGPT, so the app only finds out when its next request fails. Consequently, you may still see yourself as “logged in” inside that app for a while. Delete your account inside the app too if you are leaving it for good.

Overall, it is worth reviewing connections every few months, just as you would for Google or Facebook logins. Our guide on reviewing apps connected to your accounts walks through a full check.

Is Sign in with ChatGPT safe?

On the plus side, the design limits what an app can see. Nevertheless, any single sign-in concentrates risk: if someone takes over your ChatGPT account, they may reach every app linked to it. So the usual account hygiene matters more than before.

• Protect the ChatGPT account first. First, use a strong, unique password and turn on multi-factor authentication.
• Read every consent screen. Approve plan usage only for apps you actually use and trust.
• Start small. Give new apps a low weekly cap, then raise it once you understand their usage.
• Prune regularly. Disconnect tools you no longer use, because old connections are easy to forget.

In addition, for a wider look at ChatGPT’s account controls, see our guide to the ChatGPT Privacy Center and security history. Also be wary of look-alike login pages; check the web address before entering ChatGPT details anywhere.

Workplace accounts and admin controls

Business users face different rules. OpenAI’s help centre says global admins manage these permissions under External access in the OpenAI Admin Console. Moreover, for Enterprise customers, delegated access for some ChatGPT features is off by default and needs explicit admin approval.

WorkOS points out a governance gap, though. Personal Plus and Pro plans sit outside company admin consoles, so an employee could connect a work tool to a personal subscription without IT seeing it. If you work in a regulated job, check your employer’s policy before linking anything.

Should you use Sign in with ChatGPT?

This section is editorial judgement. Plan usage makes most sense, for instance, if you already pay for Plus or Pro and use one of the supported coding or productivity tools. In that case, you avoid paying twice for similar AI access.

On the other hand, skip it if you rarely hit your ChatGPT limits anyway, or if you prefer to keep work and personal accounts strictly apart. Similarly, if an app’s own pricing is clear and cheap, separate billing may be easier to track. Either way, identity-only sign-in is a modest convenience with limited data sharing.

For developers, Sam Altman’s DevDay pitch was direct: users are “already paying for an AI subscription, and now you don’t have to cover their token costs,” as The New Stack reported. That incentive suggests the button will spread to more apps, so it pays to understand it now. Finally, for more on where ChatGPT is heading, read our explainer on ChatGPT Work.

Sign in with ChatGPT: FAQs

Sources

• OpenAI Help Center, “Sign in with ChatGPT” (accessed October 2026)
• The New Stack, “OpenAI makes ‘Sign in with ChatGPT’ a way to use your subscription in third-party developer tools” (September 29, 2026)
• OpenAI, “Sign in with ChatGPT” documentation (accessed October 2026)
• WorkOS, “Sign in with ChatGPT: The scope that spends your users’ plan” (October 1, 2026)
• OpenAI, “DevDay 2026 Recap” (September 29, 2026)