Sign in with ChatGPT Draining Your Plus or Pro Limits? How to Cap or Disconnect an App (2026)

A coding agent that runs all night can burn through a week of ChatGPT usage before you’ve had breakfast.

That’s the trade-off hiding behind the new “Continue with ChatGPT” buttons showing up in Notion, Vercel, Devin, Warp, and a dozen other tools. OpenAI expanded Sign in with ChatGPT at DevDay 2026 so Plus and Pro subscribers can point those apps at the plan they already pay for, instead of buying separate AI credits. Handy. Also easy to get wrong, because the permission you click through in five seconds keeps working long after you close the app.

This walkthrough covers what the app actually gets, how the usage is counted, and the two settings that keep it from eating your week.

Jump Straight to Your Question

• What Does an App Get When You Sign In With ChatGPT?
• Does Sign in with ChatGPT Use Up Your Plus or Pro Limits?
• Which Apps Can Use Your ChatGPT Plan Right Now?
• How Do You Set a Weekly Cap for One App?
• Why Does the App Keep Using Your Plan After You Log Out?
• What Happens When Your Weekly Allowance Runs Out?
• Should You Let an App Use Your Plan or Keep Its Own Billing?
• Tips
• Warnings
• FAQ
• Sources

What Does an App Get When You Sign In With ChatGPT?

An app that uses Sign in with ChatGPT receives your name, email address, and profile picture from your ChatGPT account, and according to OpenAI’s Sign in with ChatGPT page, it does not get access to your ChatGPT conversations or memories.

That’s the identity half. It works like “Sign in with Google”: you click the button, log in to ChatGPT, and see a consent screen listing what the app is asking for.

The developer side confirms the same boundary. OpenAI’s developer quickstart lists the identity scopes as openid profile email, which return a stable account ID plus name, email, and picture. The docs state that identity scopes “don’t grant access to ChatGPT conversations or OpenAI API resources,” and that plan access doesn’t hand over your API key either.

When I checked the consent flow described in OpenAI’s docs, I noticed that signing in and using your plan are listed as two separate permissions. You can say yes to the first and still decide on the second.

That second permission is the one that costs you something.

Does Sign in with ChatGPT Use Up Your Plus or Pro Limits?

Yes: when a Plus or Pro subscriber lets an app use their ChatGPT plan, every eligible AI request from that app is deducted from the same “ChatGPT work and Codex” usage included in the plan, and OpenAI says connecting an app adds no extra allowance.

There is no second bucket. A refactor that Devin or Warp runs through your plan draws from the same weekly pool as the long research chat you were planning for Thursday.

A few details from OpenAI’s page matter here:

• Only Plus and Pro can share plan usage. Free and Go accounts can still use the sign-in part, but not the plan part.
• The app may still charge its own fees. Using your ChatGPT plan covers the AI requests, not the app’s subscription.
• Usage rates vary by app and task. An autonomous coding agent that loops through dozens of tool calls will draw far more than a one-off “summarize this page” button in a notes app.

If you’re already close to your limits, this matters even more. Pro 200 subscribers are about to see their allowance cut on October 30, which we broke down in the Pro 200 downgrade math.

Which Apps Can Use Your ChatGPT Plan Right Now?

As of October 2026, OpenAI’s Sign in with ChatGPT page lists 12 commercial apps that can use a Plus or Pro plan (one of them, Lovable, marked “coming soon”), plus 4 open-source integrations and 5 apps that offer sign-in only.

When I compared the three lists side by side, I found that most plan-usage apps are coding tools. That tells you where the heavy draw is likely to come from.

Table: app lists from OpenAI’s Sign in with ChatGPT page, checked October 4, 2026. The “likely draw” column is our own estimate based on what each type of tool does, not an OpenAI figure.

Signing in to Canva or HubSpot with ChatGPT costs you nothing from the plan. Connecting Devin is a different conversation.

How Do You Set a Weekly Cap for One App?

To cap a connected app, open ChatGPT Settings > Usage and use the percentage menu next to that app to set its weekly limit as a share of your overall weekly plan usage.

Do this the same day you connect anything that runs on its own.

1. Open Settings in ChatGPT on web or desktop, then go to Usage.
2. Find the app in the list of connected apps.
3. Pick a percentage from the menu next to it. Start low, around 20% to 25% for a coding agent, and raise it only if the agent keeps stalling.
4. Check the usage view again after a day of normal work to see how fast the app actually burns through its share.

Here’s the part that trips people up. OpenAI’s wording is that the limit “is a cap, not a reserved share.” Setting Notion to 30% doesn’t set aside 30% for Notion. It just stops Notion at 30%. Your own chats can still use the whole pool before Notion gets there.

And caps on two apps don’t add up to anything. Two apps at 60% each can, in theory, empty the week between them.

Why Does the App Keep Using Your Plan After You Log Out?

Logging out of a partner app only ends your session in that app; the connection to ChatGPT stays active and can keep using your plan until you disconnect it under Settings > Security and login > Sign in with ChatGPT.

Most people skip this and wonder where their week went.

A background agent, a scheduled job, or a teammate’s workspace tied to your login can keep making requests with no one at the keyboard. To fully cut it off:

1. Go to ChatGPT Settings > Security and login.
2. Open Sign in with ChatGPT under your login connections.
3. Select the app and choose Disconnect.
4. Contact the app’s provider if you also want your data there deleted. OpenAI notes that disconnecting doesn’t delete data the app already received, and usage already counted is not refunded.

If you’re also testing ChatGPT’s new always-on agents, the same “revoke, don’t just close” rule applies. Our guide to what a ChatGPT Dot can access and how to revoke it covers that side.

What Happens When Your Weekly Allowance Runs Out?

When a ChatGPT Plus or Pro plan’s weekly allowance is used up, connected apps stop drawing on the plan rather than switching to the app’s own billing, and they can only dip into purchased ChatGPT credits if the app’s limit is set to 100% and credit use is explicitly turned on, which is off by default.

That default is the safety net. Leave it alone unless you’ve thought about it.

The risky setup is a coding agent at 100% plus automatic credit purchases. At that point an overnight run can turn into a real charge on your card instead of a “limit reached” message.

Honestly, for most people the right answer is no credits for third-party apps at all. If an app hits its cap mid-task, you’ll see it, and you can decide whether that job was worth more of your week.

Should You Let an App Use Your Plan or Keep Its Own Billing?

Using a ChatGPT plan inside a partner app makes sense when your weekly ChatGPT allowance usually goes unused, and it’s the wrong choice when you already hit Plus or Pro limits, because app requests and your own chats share one pool.

A quick way to decide:

• You rarely see limit warnings: connect the app, cap it at 25% to 40%, and enjoy not paying twice for AI.
• You hit limits most weeks: keep the app on its own billing or API key. Your ChatGPT pool is already spoken for.
• You only want faster login: allow sign-in, decline plan usage. You get the convenience with zero draw.
• It’s a work account: check with your admin first. A personal Plus plan powering company tooling gets messy fast.

If you’re still deciding which subscription fits how you work, our $20 AI plan comparison lays out the trade-offs.

Tips

• Set the cap before the first real task, not after you notice the drain.
• Use a lower cap for agents that run unattended and a higher one for tools you only trigger by hand.
• Review Settings > Usage on Monday mornings. A weekly glance catches a runaway app early.
• Disconnect trial apps the day you stop testing them. Uninstalling isn’t the same thing.

Warnings

• Signing out of a partner app does not stop it from using your plan. Only Disconnect in ChatGPT does that.
• Turning on credit use for an app at a 100% limit can lead to real charges once your plan allowance runs out.
• Disconnecting doesn’t delete data an app already received. Ask the app’s provider for deletion separately.
• Look for the button on the app’s own site or settings page. Don’t follow a “Sign in with ChatGPT” link from an unexpected email, since a fake consent page is an easy phishing trick.

FAQ

Can a Sign in with ChatGPT app read my chat history?

No. OpenAI says apps connected through Sign in with ChatGPT receive only your name, email address, and profile picture, plus plan usage if you allow it. They do not get your conversations or memories.

Can ChatGPT Free or Go users connect apps this way?

Free and Go users can use the sign-in part with participating apps. Using your ChatGPT plan for AI requests inside those apps is limited to Plus and Pro subscribers.

Does disconnecting an app give me back the usage it already spent?

No. Disconnecting stops future requests from that app, but usage that was already counted against your weekly allowance stays counted until your normal reset.

Sources

• ChatGPT Learn — Sign in with ChatGPT (partners, plan usage, settings)
• OpenAI Developers — Sign in with ChatGPT quickstart (scopes and data returned)
• OpenAI Help Center — Using your ChatGPT plan in other apps

Fact-checked against OpenAI’s Sign in with ChatGPT page, developer quickstart, and help center as of October 4, 2026. Settings names and app lists can change as the rollout continues.