OpenAI said Monday that "tens of thousands of advertisers" now used ChatGPT Ads, which is available in more than 40 countries.

Two hundred days in, OpenAI has something Google and Facebook needed years to assemble: a billion-user surface, a self-serve pipe and a billion-dollar pace.

OpenAI's move to serve ads in ChatGPT earlier this year drew ridicule from its chief rival, Anthropic, in the form of a Super Bowl commercial.