Doctors sent an ad-funded AI 42 million prompts last month.

OpenEvidence says nearly two-thirds of US doctors use it, and investors value it at $15 billion.

A person close to the company says advertising will bring in $400 million to $500 million by the end of 2026.

A June Nature paper found it trailed general AI models like Gemini and GPT on clinical benchmarks.

Founder Daniel Nadler plans clinical trials in cancer and rare diseases in the coming weeks.

How each outlet framed it
Ars Technica
quotes Nadler calling OpenEvidence 'the first viral consumer internet app in healthcare' and notes the 42 million monthly prompts, framing it as consumer growth

Sources: Ars Technica