Sign in with ChatGPT: OpenAI's Data Collection Revealed

OpenAI has launched a new "Sign in with ChatGPT" feature, acting as a cross-platform identity system. This puts them in competition with major tech companies for web logins. When you use this to sign in to a partner app, that app gets your name, email, and profile picture. However, OpenAI itself collects a lot more data. This includes account and application identifiers, your IP address, location information, browser details, and device identifiers. What's interesting is that this additional data collection is a standard part of how authentication systems work. OpenAI logs the full context of every sign-in, including which app you used, what permissions were granted, and from where. This is how they operate as the authorization server. The bottom line is that while partner apps see limited information, OpenAI gathers a much broader picture of your online activity across its growing network.