April 25, 2024: "To disable chat history and model training, navigate to ChatGPT > Settings > Data Controls and disable Chat history & training. While history is disabled, new conversations won’t be used to train and improve our models, and won’t appear in the history sidebar. To monitor for abuse, we will retain all conversations for 30 days before permanently deleting." https://web.archive.org/web/20240425194703/https://help.open...
May 02, 2024: "To disable model training, navigate to your profile icon on the bottom-left of the page and select Settings > Data Controls, and disable “Improve the model for everyone.“ While this is disabled, new conversations won’t be used to train our models." https://web.archive.org/web/20240502203525/https://help.open...