When was OpenEvidence founded?

OpenEvidence was founded in 2021 and became a unicorn in 2025.

Where is OpenEvidence located?

OpenEvidence is headquartered in Cambridge, United States.

How many employees does OpenEvidence have?

As of Apr 30, 2026, the latest employee count at OpenEvidence is 115.

Is OpenEvidence a funded company?

OpenEvidence is a funded company, having raised a total of $735M across 11 funding rounds to date. The company's 1st funding round was a $166K Grant (prize money) round, raised on Jan 01, 2015.

How much is OpenEvidence worth?

The latest valuation of OpenEvidence is $6B as of Oct 20, 2025.

When was the latest funding round of OpenEvidence?

OpenEvidence's latest funding was a $250M Series D round on Jan 21, 2026, with participation from 19 investors.

Is OpenEvidence a Healthcare IT company?

The primary sector of OpenEvidence is Healthcare IT.

Who are the top competitors of OpenEvidence?

OpenEvidence's top competitors include Nested Knowledge, iDoctus and Ciplamed. Among them, OpenEvidence secured the most recent funding round in January, 2026.

OpenEvidence - 2026 Company Profile, Team & Funding

Sectors and market segments that OpenEvidence operate in

OpenEvidence serves in the HealthTech market segments.The primary business model of OpenEvidence is:

HealthTech > Healthcare IT > ***** **** > ***** ******

Company Details

AI powered medical search platform for healthcare professionals. It aggregates, synthesizes, and visualizes clinically relevant evidence in a format. It aims to provide healthcare professionals with accurate and access to medical information, supporting informed decision making in clinical practice. It provides solutions to enhance the accessibility and usability of peer reviewed medical literature for healthcare professionals.

Website: www.openevidence.com/
Social
Email ID: *****@openevidence.com

Key Metrics

Founded Year

2021

Location

Cambridge, United States

Stage

Series D

Total Funding

$735M in 11 rounds

Latest Funding Round

Series D, Jan 21, 2026, $250M

Post Money Valuation

$6B as on Oct 20, 2025

Investors

Sequoia Capital & 6 more

Employee Count

115 as on Apr 30, 2026

Investment & Acquisitions

Amaro

Similar Companies

Nested Knowledge & 179 more

View OpenEvidence's full profile

OpenEvidence has raised a total funding of $735M over 11 rounds. Its first funding round was on Jan 01, 2015. Its latest funding round was a Series D round on Jan 21, 2026 for $250M. 19 investors participated in its latest round. OpenEvidence has 7 institutional investors.

Here is the list of recent funding rounds of OpenEvidence:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Jan 21, 2026	$250M	Series D	-	-	Thrive Capital, DST Global	Sequoia Capital, Google Ventures, Nvidia, Kleiner Perkins, Blackstone, Henry Kravis, Coatue, Conviction, Iconiq Capital, Greycroft, Breyer Capital, Bond Capital, Craft Ventures, Goanna Capital, Meritech, Alkeon Capital Management, Mayo Clinic
Oct 20, 2025	$200M	Series C	$6B	-	Google Ventures	Sequoia Capital, Kleiner Perkins, Thrive Capital, Coatue, Bond Capital, Blackstone
Jul 15, 2025	$210M	Series B	$3.5B	-	Google Ventures, Kleiner Perkins	Sequoia Capital, Coatue, Thrive Capital, Conviction

Access funding benchmarks and valuations. Sign up today!

View details of OpenEvidence's funding rounds and investors

The founders of OpenEvidence are Daniel Nadler and Zachary Ziegler.

Here are the details of OpenEvidence's key team members:

Daniel Nadler: Co-Founder of OpenEvidence and founder of 1 other company. They are also an angel investor in 3 startups and serve on the board of 1 company.
Contact Info: 1 email address
Zachary Ziegler: Co-Founder & CTO of OpenEvidence.