OpenAI now permits ChatGPT subscribers to utilise their subscription allowances within external applications. The company announced this expansion during its DevDay Exchange event in Seoul, South Korea, on 22 October.

Users can access the feature, titled "Sign in with ChatGPT", through 16 initial partners. Notion, the web development platform Vercel, and the AI coding assistant Devin are among the first companies included in the rollout.

Activity within these external tools counts towards the existing limits of a subscriber's ChatGPT account. Subscribers can manage their usage by setting specific limits on how much of their weekly ChatGPT quota each connected application may consume.

OpenAI initially launched this functionality for Pro and Plus subscribers, though ChatGPT Go users are also eligible for usage sharing in participating commercial apps. Developers now have new methods to integrate services directly into the ChatGPT interface.

An expanded plugin system allows applications to function via dedicated workspaces, file-editing interfaces, and the ChatGPT side menu. The company also introduced Locked Chats to hide specific conversations from the standard chat list.

Locked Chats do not offer end-to-end encryption.