ChatGPT itself, as an AI model, does not directly support OAuth; instead, it is the OpenAI API that developers integrate with to build ChatGPT-like functionalities into their mobile applications. When a mobile app needs to incorporate user authentication, it typically implements OAuth flows independently to manage its own users. This involves authenticating the app's end-users using established identity providers like Google, Apple, or custom OAuth 2.0 servers
. Once a user is authenticated within the mobile app, the app then makes requests to the OpenAI API, usually utilizing the app developer's securely stored API key or other developer-level authentication. Therefore, OAuth is primarily leveraged by the third-party mobile application for user login and identity verification, not as a direct mechanism for that app's end-user to authenticate against their personal ChatGPT account via the OpenAI API. The official ChatGPT mobile app, however, does use standard authentication methods, often leveraging underlying OAuth principles, to log users into their OpenAI accounts. More details: https://t.me/s/fourmamacomua