We previously shared our early plans⁠ for age prediction, and today we’re sharing more detail as the rollout is underway.

ChatGPT uses an age prediction model to help estimate whether an account likely belongs to someone under 18. The model looks at a combination of behavioral and account-level signals, including how long an account has existed, typical times of day when someone is active, usage patterns over time, and a user’s stated age. Deploying age prediction helps us learn which signals improve accuracy, and we use those learnings to continuously refine the model over time.

Users who are incorrectly placed in the under-18 experience will always have a fast, simple way to confirm their age and restore their full access with a selfie through Persona, a secure identity-verification service. Users can check if safeguards have been added to their account and start this process at any time by going to Settings > Account.

When the age prediction model estimates that an account may belong to someone under 18, ChatGPT automatically applies additional protections⁠ designed to reduce exposure to sensitive content, such as: