How ChatGPT learns about the world while protecting privacy

ChatGPT learns about the world through training on diverse text data while implementing privacy protections that prevent it from storing personal information from individual conversations or retaining user data between sessions. OpenAI employs techniques such as differential privacy and data anonymization during model training to help balance the model's ability to acquire knowledge with safeguarding user privacy. The system does not retain conversation history unless users explicitly save it, and OpenAI has implemented policies and technical measures to minimize the risk of unintended information leakage.

Source: OpenAI | 2026-05-06