Sign in with ChatGPT: Plus and Pro Plan Usage in Limited Preview

From a login button to a shared allowance

Sign in with ChatGPT already existed. The New Stack reports that OpenAI released it as a beta in July with partners including Airtable, GitLab, HubSpot, Notion, Supabase and Vercel, and that it was then chiefly an identity feature: a participating site receives the user’s name, email address and profile picture, not their conversations or memory. [2][5]

At DevDay OpenAI added a second, separate permission. After signing in, a Plus or Pro subscriber can let the app use their ChatGPT plan, and eligible AI requests in that app then count against the ChatGPT Work and Codex usage included in the plan. The app needs no OpenAI API key from the user, and connecting it does not add any usage to the plan. [5][4]

Caps, credits and separate charges

Each connected app gets a weekly limit, set as a share of the subscriber’s overall weekly usage, and ChatGPT settings show how much each app consumed. The cap is a ceiling, not a reserved pool. When the plan runs out, an app may draw on purchased ChatGPT credits only if the user has separately opted in, which is off by default and requires that app’s limit to be set to 100 percent. [5]

The partner can still charge for its own subscription, infrastructure or premium features. OpenAI’s help page also notes that signing out of an app does not stop its authorized use of the plan; the connection has to be removed from ChatGPT’s security settings. [5]

Who could use it on launch day

Signing in with ChatGPT is available to any signed-in user, subject to organization settings. Plan usage is limited to Plus and Pro, and OpenAI’s release notes call it a limited preview with participating integrations. OpenAI named 16 launch partners, including Cognition’s Devin, Notion, Vercel, T3, OpenClaw and Dactyl; The New Stack’s list adds coding tools such as Amp, Warp, OpenCode and Kilo Code, with Lovable marked as coming soon. Other commercial developers were directed to an interest form. [1][4][2][5]

The subscription as a distribution channel

Atlas interpretation: Sam Altman pitched the change to developers on stage: users are already paying for an AI subscription, so an app no longer has to cover their token costs to get them started. TechCrunch placed it beside plugin extensions and in-conversation app suggestions as part of making ChatGPT the place where software is found and used, while noting OpenAI announced no billing or revenue-sharing layer to go with it. Some tools had already let users spend a ChatGPT subscription through Codex sign-in; the September change made it an OpenAI-sanctioned option across a named partner list. [2][3]