OpenAI now allows ChatGPT Plus and Pro subscribers to apply their existing plan allowances toward usage inside third-party AI and coding platforms, the company announced Tuesday at its fourth annual OpenAI DevDay developer conference. The expansion builds on an identity feature launched in July, transforming Sign in with ChatGPT from a simple login system into a way for users to carry their subscription credits across 16 partner services including Devin, Notion, Vercel, and Amp. CEO Sam Altman told attendees that letting users bring their current ChatGPT allowance into new products can reduce friction for those trying the tools for the first time.
The program covers both ChatGPT Plus and Pro subscribers, drawing from the Work and Codex usage already included in their plans when they interact with participating third-party services. Eligible OpenAI usage inside partner tools counts against a user's existing ChatGPT plan limits rather than triggering separate API charges or third-party credit systems. Users can set weekly caps for individual apps, and once that threshold is hit, included usage stops instead of automatically switching to the partner's own billing. The 16 launch partners span open-source and commercial platforms, including OpenCode, OpenClaw, Pi, T3, Hyperagent, Hermes Agent, Vorflux, Dactyl, Kilo Code, Warp, Conductor, and Lovable, which is listed as coming soon.
According to OpenAI, the company will add more partners to the program going forward, starting with the current 16 launch services. Altman explained that the change means developers no longer have to cover token costs to get users started, since those users are already paying for an AI subscription. The original July release of Sign in with ChatGPT focused on identity, allowing users to create or access accounts on participating sites using their ChatGPT login while plugins used the same process to link accounts with underlying services. OpenAI said partners received a user's name, email address, and profile picture, with any additional plugin permissions requiring separate approval.
The distinction between earlier implementations and the current rollout centers on bringing plan usage to more participating tools with clearer visibility and controls in ChatGPT settings, an OpenAI spokesperson said. A ChatGPT subscription and OpenAI's developer API have traditionally been separate products, with developers using the API generally supplying an API key and paying per usage while third-party services pass model costs on through their own subscriptions or credit systems. Sign in with ChatGPT gives participating services an official route for letting users bring their existing ChatGPT allowance with them. At least one launch partner, Dactyl, had showcased the integration since late August, with its documentation noting that connecting ChatGPT covers the agent interpreting a user's request and writing Swift code while compiling apps, generating icons, creating assets, and publishing still consume Dactyl credits. The expansion suggests OpenAI is testing whether portable subscriptions can drive adoption across a fragmented ecosystem of AI-powered developer tools, though the long-term impact will depend on how aggressively the company manages usage caps and whether the model economics work for both sides.