Quoting Chengpeng Mou

Simon Willison's Blog / 4/6/2026

📰 NewsSignals & Early TrendsIdeas & Deep Analysis

Key Points

  • OpenAI’s Chengpeng Mou cited anonymized U.S. ChatGPT data showing roughly 2 million weekly messages related to health insurance.
  • Mou reported about 600,000 weekly messages classified as healthcare from users living in “hospital deserts,” defined as areas with ~30 minutes to the nearest hospital.
  • The data indicates 7 in 10 healthcare-related messages occur outside clinic hours, suggesting reliance on ChatGPT when traditional services are less available.
  • The post frames these figures as a signal about real-world health-adjacent use patterns of LLMs, particularly for access-constrained populations.
Sponsored by: WorkOS — Production-ready APIs for auth and access control, so you can ship faster.

5th April 2026

From anonymized U.S. ChatGPT data, we are seeing:

  • ~2M weekly messages on health insurance
  • ~600K weekly messages [classified as healthcare] from people living in “hospital deserts” (30 min drive to nearest hospital)
  • 7 out of 10 msgs happen outside clinic hours

Chengpeng Mou, Head of Business Finance, OpenAI

Posted 5th April 2026 at 9:47 pm