Vera Health raises $28.5 million after its clinical AI search spread to 800,000 clinicians by word of mouth

Vera Health, a clinical AI search engine that grades the evidence behind every answer, said Tuesday, Oct. 27, 2026, it raised a $28.5 million Series A led by Threshold Ventures, bringing total funding to $32 million.

Clinical AI is a crowded aisle — OpenEvidence and Doximity are already there with much bigger war chests — and Vera's pitch is honesty as a feature: show the doctor when the evidence is a red-flagged case report instead of a confident paragraph. That is the right instinct for a tool doctors use between patients. The growth numbers are the company's own (download rankings especially), but 800,000 users on a 12-person team means distribution came from doctors texting doctors, not a sales force. Now it has to prove the grading holds up as the questions get harder and the users get busier.

Vera Health, based in San Francisco, said on Oct. 27, 2026, that it raised a $28.5 million Series A. A Series A is an early round of private funding, named with a letter. Threshold Ventures led. Mantis VC and SV Angel participated. Existing investors Y Combinator and Gradient tripled down, the company's phrase for putting more money in. Total funding is $32 million. Total funding is every dollar raised so far, including this round. Take $28.5 million off $32 million and the earlier raises add up to $3.5 million. That subtraction is arithmetic. Those figures and those investor names are Vera Health's, from its press release on PR Newswire.

Vera Health is a clinical AI search engine for physicians. It says it searches more than 60 million peer-reviewed publications, clinical guidelines, consensus statements, and drug labels. It ranks those sources by study design, level of evidence, cohort size, recency, journal quality, and citation impact. Study design is how the research was built, a large trial or a write-up of one patient. Level of evidence is how strong that design is. Cohort size is how many people were in the study. Recency is how new it is. Those ranking factors are Vera Health's.

Every claim is linked to the research behind it and color-coded by how strong that evidence is. Red means the evidence is thin. The release's example is a rare condition with no large trial behind it, only a small case series or a report about a single patient. A case series is a write-up of a handful of patients, not a trial that compares treatments. The company says the point is to show the doctor that limit. That description is Vera Health's.

A year ago a few thousand clinicians used Vera. The company says more than 800,000 do now, in 190 countries, including about 1 in 4 physicians in Spain and Italy. Most of them found it because a colleague recommended it. The company has 12 employees. Those counts are Vera Health's.

Vera says it has been the most downloaded clinical app in the world on the App Store and on Google Play every month since June. It says that in September it was downloaded more times than OpenEvidence and Doximity combined. OpenEvidence and Doximity are other tools doctors already use to look up medicine. Those download rankings are the company's claim. The release does not print the store chart or the download counts behind the comparison.

Vera partners with the American College of Emergency Physicians, shortened to ACEP, to put ACEP's clinical policies into the product with the source attached. A clinical policy, here, is the society's written guidance for a kind of emergency. That partnership is the release's.

Taieb Bennani, co-founder, said clinicians "make the call in seconds, with more evidence than any human could ever read," and that "We don't have the biggest team or the most money. We have the people who care the most about getting it right." Maxime Allouch, co-founder, said "we believe there's value in making uncertainty visible." Scott M. Silvers, MD, chair of ACEP's Clinical Policies Committee, said "A large, randomized trial and a case report should never carry the same weight, yet most AI tools blend them into the same confident answer." Those quotations are theirs, on Vera Health's release.

The picture is Vera Health's official photo of co-founders Maxime Allouch and Taieb Bennani, seated in leather armchairs in front of a brick wall. The credit is Vera Health.

In plain terms, Vera Health said on Tuesday that Threshold Ventures led a $28.5 million Series A, and that total funding is now $32 million. The product searches tens of millions of medical sources and marks a claim red when the evidence is thin. The company says 800,000 clinicians in 190 countries use it, on a team of 12, mostly because doctors told other doctors. The download ranking against OpenEvidence and Doximity is the company's own claim.