OpenAI’s models, including its GPT series, are available via APIs and Microsoft Azure, and so a drop in ChatGPT’s website use may be due to people moving to programmatic interfaces

I feel like this is an important detail that changes the conclusion of the article: there may be a lot more end user, through 3d party apps, but the way of measuring won’t reveal it. This especially important considering that (correct me if I’m wrong) API users are paying ones !