OpenAI Launches 'Sign in with ChatGPT' Single Sign-On for External Apps
OpenAI has launched a 'Sign in with ChatGPT' OAuth feature, allowing users to authenticate on third-party applications using their ChatGPT account. The initial integration includes major productivity and developer platforms such as Notion, GitLab, Vercel, Supabase, Airtable, and HubSpot. This move expands OpenAI's presence into digital identity management, placing it in direct competition with established Single Sign-On (SSO) providers like Google, Apple, and Microsoft. It further embeds ChatGPT into everyday developer tools and enterprise workflows. When signing in, external applications only receive basic profile information such as the user's name, email address, and profile photo, while chat history, files, and billing details are not shared. Enterprise administrators retain control over the feature through organizational identity policies.
## BACKGROUND
Single Sign-On (SSO) systems utilizing open protocols like OAuth 2.0 allow users to authenticate across multiple software applications using one primary account. Traditionally dominated by big tech identity providers, SSO streamlines access management and improves security by eliminating the need to remember multiple passwords.