The number is chatGPT user messages (not requests via the API) so they are no enterprise accounts making hundreds of queries per minute or bot farms automating fake recipe websites.

Based on Open AI's Usage Breakdown[0], as of July 2025, ChatGPT processes 1.9B Non-Work and 716 M Work Messages per day.

[0] https://www.nber.org/system/files/working_papers/w34255/w342...