The $15 billion ad-powered AI startup your doctor may already be using
Nearly two-thirds of US doctors are using an artificial intelligence chatbot named OpenEvidence to help diagnose and treat patients, driving the startup to a $15 billion valuation. Founded in 2022 by Daniel Nadler, the Miami-based platform lets physicians search medical journals and clinical guideli…
Nearly two-thirds of US doctors are using an artificial intelligence chatbot named OpenEvidence to help diagnose and treat patients, driving the startup to a $15 billion valuation. Founded in 2022 by Daniel Nadler, the Miami-based platform lets physicians search medical journals and clinical guidelines. The ads-powered startup raised $250 million in September at its $15 billion valuation, drawing backing from investors like Sequoia, Andreessen Horowitz, and Blackstone.
A source close to the company stated it is on track to generate between $400 million and $500 million in ad revenue by the end of 2026. Major hospital groups including Mount Sinai and Memorial Sloan Kettering have embedded the software into their electronic health records. While some physicians praise the tool for easing workloads, researchers have raised concerns about accuracy.
A June study published in Nature found that OpenEvidence underperformed general-purpose AI models like Google Gemini on clinical benchmarks, and critics question its ad-based financial model.
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Original publication: 21 October 2026 20:44
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