CNBC's latest article on OpenAI.

CNBC reports OpenAI investors were surprised by revenue chief Denise Dresser's sudden exit.

Former employees also describe a hire-fast, fire-fast culture inside OpenAI is so intense that one called it a "pressure cooker" environment.

And Chief Revenue Officer Denise Dresser will leave OpenAI in the coming weeks to pursue other opportunities.

Dresser remained directly responsible for global revenue strategy across enterprise and customer success.

Dresser's exit is especially consequential because she oversaw OpenAI's enterprise business, which she said represented 40% of revenue and was on track to match consumer revenue by the end of 2026.