OpenEvidence is a US company operating an AI medical-search and reference platform for physicians, described in coverage as a "ChatGPT for doctors." As of April 2026 the platform was used by roughly 65% of US doctors across about 27 million clinical encounters in a month, with roughly 650,000 active US physicians and 1.2 million international users; 60% of queries concerned clinical decision-making. The tool is free for credentialed users and ad-supported. CEO Daniel Nadler said, "We did the hardest thing in the history of American health care…We got the majority of American doctors to all voluntarily adopt a single technology platform" (Source: nbcnews.com).
Reported concerns include hallucinations, the lack of rigorous patient-impact studies, and deskilling; MaineHealth asks clinicians to refrain from entering protected health information (Source: nbcnews.com).
Snapshot
Valuation
| Date | Valuation | Notes | Source |
|---|---|---|---|
| 2026-07-17 | ~$20B (considering raise of ~$200M) | Separate acquisition talks with a large technology company also reported | theinformation.com |
| ~2026-Q1 | $12B ($700M raised) | Sequoia, GV, Nvidia, a16z, Thrive; ~12× valuation increase in just over a year | nbcnews.com |
Revenue
| Date | Figure | Notes | Source |
|---|---|---|---|
| 2026-07-17 | ~$300M annualized | Doubled in seven months; 90% gross margins reported | theinformation.com |
Relationships
- deploys-in: Healthcare — AI Deployment — medical search adopted by a majority of US physicians