OpenAI has opened a waitlist for access to a paid version of ChatGPT that features additional improvements.

The company has, so far, been reluctant to make premium accounts for ChatGPT—despite OpenAI reportedly spending millions of dollars a month to keep it free.

OpenAI says that it doesn’t plan on making paid “pro” accounts generally available in the foreseeable future. However, the waitlist for such an experimental version shows what kind of enhancements...