Sign in with ChatGPT is two separate permissions, not one all-access switch. A participating app can use your ChatGPT identity to create or access an account. Separately, eligible ChatGPT Go, Plus, and Pro users can allow certain participating apps to consume the ChatGPT Work and Codex usage included in their plan. You can approve the sign-in without approving plan usage.
That does not make the partner app free. It may still charge for its subscription, infrastructure, services, or premium features. Each app can have a weekly cap, and usage still draws from your existing overall allowance rather than creating a new pool. For a one-person business or a tightly controlled pilot, that can be convenient. For shared production workflows, centralized budgets, offboarding, auditability, or service accounts, use a managed Business or Enterprise workspace, a centrally owned API setup, or both.
Verification note: identity, plan eligibility, partner categories, privacy, usage caps, credit fallback, disconnection, and organization controls were checked against current OpenAI first-party pages on October 19, 2026. This is vendor-document analysis, not hands-on testing. OpenAI and participating apps can change eligibility, limits, fees, and permissions.
The practical verdict for a small business
Use Sign in with ChatGPT as an individual convenience layer, not as your company's AI procurement system. It is useful when one person wants faster access to a trusted participating tool and wants eligible requests to count against an existing Go, Plus, or Pro allowance.
| Situation | Recommended path |
|---|---|
| One owner testing a supported app for low-risk work | Sign in with ChatGPT; set a low app cap; leave credit fallback off initially |
| Employee needs identity sign-in but the app should bill separately | Approve sign-in only; decline plan usage |
| Team needs central seats, roles, SSO, billing, and workspace policies | ChatGPT Business or Enterprise, subject to plan and admin controls |
| Product or workflow needs shared production capacity and central cost controls | Company-owned OpenAI API organization and keys, with application-level controls |
| App requires its own subscription or infrastructure | Budget that separately; ChatGPT plan usage does not replace it |
| Workflow handles customer, financial, HR, health, legal, or confidential data | Complete vendor, permission, retention, and security review before connecting |
The wrong mental model is “my ChatGPT subscription now pays for every AI app.” The accurate model is “a limited set of participating tools may use part of one eligible person's existing allowance, under separate permission and cap controls.”
How Sign in with ChatGPT and plan sharing differ
Identity sign-in tells the app who you are; plan sharing tells OpenAI the app may spend eligible usage from your allowance. OpenAI presents them as separate choices.
The identity permission can be used by authenticated ChatGPT users, including users in Enterprise organizations, when the partner and organization settings allow it. Optional plan usage in participating commercial apps is currently limited to Go, Plus, and Pro accounts. Open-source integrations remain available more broadly under OpenAI's published rules.
The distinction matters in four common cases:
- You can sign in without letting an app use your plan.
- An app can support ChatGPT identity but not plan usage.
- An eligible account can still be blocked by the app's own subscription tier.
- An organization can restrict identity or application access even when the user has a ChatGPT account.
No OpenAI API key is shared through this flow. A production application that needs a centrally owned API key, shared budget, stable backend integration, or service-account behavior is solving a different problem.
Which apps currently support it?
The official directory separates partners into plan-usage apps, sign-in-only apps, and open-source integrations. As verified October 19, 2026, it listed the following:
| Directory category | Current entries | What the category means |
|---|---|---|
| Apps with ChatGPT plan usage | Amp Code, Conductor, Dactyl, Devin, Hermes Agent, Hyperagent, Kilo Code, Notion, Vercel, Vorflux, Warp; Lovable marked “coming soon” | The app may separately request permission to use eligible ChatGPT plan usage |
| Apps with sign-in only | Airtable, Canva, GitLab, HubSpot, Supabase | ChatGPT can be used for identity; the directory does not list these as consuming your plan allowance |
| Open-source integrations | OpenClaw, OpenCode, Pi, T3 | Open-source implementations supported under OpenAI's published integration path |
Treat this as a dated directory, not a permanent compatibility promise. Availability may depend on the partner's plan, rollout, region, requested feature, and your OpenAI organization policy. A logo in the directory also does not mean every model, API feature, or premium partner feature is included.
What information does the app receive?
Basic identity sign-in shares your name, email address, and profile picture, if you have one. OpenAI says Sign in with ChatGPT does not independently share your ChatGPT conversations, memories, files, tokens, billing information, other ChatGPT account data, or an OpenAI API key.
Plan usage permission lets eligible requests in the app count toward the ChatGPT Work and Codex usage included in your plan. It does not, by itself, give the app access to your chat history or memory.
That boundary is useful, but it is not the whole privacy review. A partner can request other delegated permissions in a separate flow. The app will also process whatever you type, upload, connect, or ask it to act on under its own terms. Before approving a business use case, review:
- the exact permissions shown in the authorization screen;
- the partner's privacy policy, retention rules, subprocessors, and deletion process;
- whether the app can read or write connected business systems;
- which employees may send customer or confidential data;
- whether your OpenAI organization has approved the application;
- how both the partner and OpenAI log authentication and usage events.
OpenAI also collects authentication, authorization, technical, device, IP-derived location, and security information needed to operate and protect the sign-in flow. That processing is separate from the basic identity fields released to the partner.
How weekly app limits work
An app limit is a percentage cap on your overall weekly ChatGPT usage, not a separate allowance. In ChatGPT, go to Settings > Usage > App limits, choose the app, set its weekly percentage, and save.
Three details prevent most billing surprises:
- The cap does not reserve usage. Setting an app to 20% does not create a protected 20% pool for that app.
- The app can stop first. It can reach its per-app cap while you still have overall ChatGPT usage available.
- Rates can differ by task and app. A long coding or agent task may consume allowance differently from a simple request, and OpenAI's usage view may not show action-level detail inside the partner app.
If the app reaches its cap, signing in again or retrying does not reset it. Check the reset information in ChatGPT settings. Keep the partner's job or request reference when investigating unexpected usage because OpenAI may need the app provider's explanation of what the task ran.
For a first pilot, set a deliberately low cap. Raise it only after you understand task behavior, partner fees, and who is authorized to use the connection.
Credit fallback and automatic-purchase risk
Credits are a separate fallback, and automatic credit purchases can turn a usage experiment into a real bill. If the option is available for your account, OpenAI lets you allow participating apps to use available ChatGPT credits after included usage runs out. This is off by default and applies across participating apps, subject to each app's own limit.
An app must have its limit set to 100% before it can use credits. But a 100% app limit does not itself enable credit use. You must separately allow apps to use credits, and your account must be eligible with credits available.
The dangerous combination is:
- the app is allowed to use the ChatGPT plan;
- its app limit is 100%;
- cross-app credit fallback is enabled; and
- automatic credit purchases are enabled.
OpenAI warns that continued usage can then cause automatic charges and that you may not receive a separate notice when included usage runs out. Review credit fallback and automatic purchases as two independent settings. A sensible small-business default is to keep both off until the owner has approved a monitored budget.
If the app cannot use plan usage or credits, OpenAI says it does not automatically switch to another paid option. The partner may offer its own billing path, which requires a separate decision.
Partner subscriptions and infrastructure can still cost extra
Sharing plan usage does not replace the partner's commercial model. A participating app may charge for seats, hosting, storage, agents, compute, premium features, support, or infrastructure even when eligible AI requests count against your ChatGPT allowance.
Before approving a tool, write down four separate cost lines:
- ChatGPT subscription cost for the individual account;
- partner subscription or seat cost;
- partner infrastructure, hosting, or premium-feature charges;
- optional ChatGPT credits and any automatic purchases.
This prevents a common procurement error: comparing only the AI allowance while ignoring the software that orchestrates the work. The partner invoice and the OpenAI usage view are different records, and neither necessarily explains the entire total cost on its own.
What happens when you disconnect or sign out?
Signing out of the partner app is not the same as disconnecting its ChatGPT authorization. OpenAI says signing out ends the app session but does not disconnect the app from ChatGPT or stop authorized plan use.
For connections that expose the control, go to ChatGPT Settings > Security and login > Sign in with ChatGPT, choose the app, select Disconnect, and confirm. Disconnecting can stop future use of the basic identity or plan authorization, but it does not:
- reverse usage already recorded;
- necessarily sign you out of the partner app;
- delete the partner account;
- delete information the partner already received.
Sign-in-only connections may not currently show a Manage connection or Disconnect control. In that case, sign out through the partner app and use its account-deletion controls or support process when deletion is required.
For employee offboarding, remove access in every relevant layer: partner account, ChatGPT connection, organization policy, connected business systems, and any separately issued API credentials. One “sign out” button is not an access-review program. It is barely a button with ambition.
Where individual accounts fall short for team governance
Per-user app caps are useful controls, but they are not a centralized team-governance model. A small business relying on employees' Go, Plus, or Pro accounts can end up with fragmented approvals, personal allowance decisions, separate partner accounts, inconsistent auto-purchase settings, and unclear offboarding ownership.
The first-party controls are strongest when the company owns the environment. OpenAI documents ChatGPT Business with a dedicated workspace, centralized seats, billing and usage controls, user roles, SAML SSO, MFA, and no training on business data by default. Enterprise adds deeper organization administration and policy surfaces. Sign in with ChatGPT identity can also be governed through organization application policies, including allow or deny rules and approved-application lists.
However, do not assume a Business or Enterprise seat can share its workspace allowance with commercial partner apps. OpenAI's current plan-usage help page names Go, Plus, and Pro for that optional commercial-app feature. Business and Enterprise are better choices here because of workspace ownership and governance, not because they expand partner plan sharing.
When to use the API or Business/Enterprise instead
Choose the API for a company-owned production integration; choose Business or Enterprise for governed employee access. Many teams need both.
Use a centrally administered OpenAI API setup when:
- the workload runs in your product, backend, automation platform, or customer workflow;
- usage should belong to the company rather than an employee's personal allowance;
- you need application-level budgets, keys, environments, logging, rate handling, and deployment controls;
- the workflow must continue through employee changes;
- developers need to select supported models and build error, retry, security, and evaluation logic;
- shared capacity and predictable ownership matter more than a quick OAuth-style connection.
Use ChatGPT Business or Enterprise when:
- employees need a managed ChatGPT workspace rather than scattered individual accounts;
- the company needs central seats, billing, roles, SSO, MFA, app controls, analytics, or approved-domain policies;
- business data should be covered by OpenAI's business-data commitments;
- admins need a repeatable onboarding and offboarding process;
- internal collaboration, shared company knowledge, and governed ChatGPT use are the main jobs.
Use Sign in with ChatGPT plan sharing when the workload is truly personal, bounded, reversible, supported by the partner, and cheap enough to fit inside one person's allowance. Convenience is the feature. Central governance is not.
A safe rollout checklist for small teams
Start with one user, one app, one bounded task, and one owner. Use this checklist before approving broader use:
- Confirm the app appears in the current official directory and supports the permission you intend to use.
- Separate identity sign-in from plan-usage approval in the decision record.
- Review the partner's subscription, infrastructure, privacy, retention, and deletion terms.
- Approve the exact data and connected systems the user may expose.
- Set a low weekly app cap and record who can change it.
- Leave credit fallback and automatic purchases off for the first pilot.
- Capture the baseline ChatGPT, partner, and infrastructure costs separately.
- Keep task references for investigating unexpected usage or failed work.
- Document how to sign out, disconnect, delete partner data, and offboard a user.
- Move to a managed workspace or API architecture before the connection becomes a shared production dependency.
Final recommendation
Sign in with ChatGPT is a sensible shortcut for individual access to a trusted participating app. Its strongest design choice is the separation between identity and plan usage. Its biggest business limitation is the same thing that makes it simple: the connection is centered on an individual account and allowance.
For a small, low-risk pilot, approve only the permissions required, set a low app cap, keep credit fallback off, and monitor both OpenAI and partner charges. For a team-wide or customer-facing workflow, stop treating one employee's subscription as infrastructure. Put employees in a managed Business or Enterprise workspace, put production workloads behind a company-owned API organization, and keep partner permissions under formal review.
FAQ
Is Sign in with ChatGPT the same as using my ChatGPT plan in an app?
No. Identity sign-in and permission to consume eligible ChatGPT plan usage are separate. You can sign in without sharing plan usage.
Which ChatGPT plans can share usage with commercial apps?
OpenAI's current help documentation says Go, Plus, and Pro users can choose to use included ChatGPT usage in participating commercial apps. The partner may impose its own plan requirements.
Does a connected app see my ChatGPT conversations or memory?
Not through Sign in with ChatGPT or plan usage alone. OpenAI says those permissions do not independently share conversations, memory, files, billing information, or an API key. Review any additional permissions separately.
Does each app receive its own weekly allowance?
No. Its weekly percentage is a cap against your overall allowance, not a separate or reserved pool.
Can a connected app create automatic charges?
Potentially. Credit fallback must be enabled separately, the app must be set to a 100% limit, credits must be available, and automatic credit purchases are a separate setting. If automatic purchases are enabled, continued use can create charges.
Does signing out of the partner app stop plan usage?
No. OpenAI says signing out does not disconnect the ChatGPT authorization or stop authorized plan use. Use the ChatGPT disconnect control when available.
Should a business use employee Plus accounts for a production workflow?
No. Use a company-managed API setup for production integrations and Business or Enterprise for governed employee access. Individual plan sharing is better suited to bounded personal use or a controlled pilot.
Sources and verification
- OpenAI Help Center: Using your ChatGPT plan in other apps and sites
- OpenAI Help Center: Sign in with ChatGPT
- ChatGPT Learn: Sign in with ChatGPT partner directory
- OpenAI Developers: Sign in with ChatGPT
- OpenAI: Small Business
- OpenAI Help Center: Managing members, seat types, and roles in ChatGPT Business
- OpenAI Help Center: Managing your tenant in Admin Console
- OpenAI: Enterprise privacy