About OpenEvidence
OpenEvidence is a company based in Cambridge (United States) founded in 2021 by Zachary Ziegler and Daniel Nadler.. OpenEvidence has raised $735 million across 11 funding rounds from investors including Craft, Kleiner Perkins and Blackstone. OpenEvidence offers products and services including OpenEvidence App. OpenEvidence operates in a competitive market with competitors including iDoctus, Copient Health, QxMD, Nested Knowledge and Exonicus, among others.
- Headquarter Cambridge, United States
- Founders Zachary Ziegler, Daniel Nadler
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Sectors
Healthcare
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Email
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Phone
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Website
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Social
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Annual Revenue
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Net Profit
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EBITDA
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Total Equity Funding
$735 M (USD)
in 11 rounds
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Latest Funding Round
$250 M (USD), Series D
Jan 21, 2026
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Investors
Craft
& 20 more
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Employee Count
Employee Count
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Products & Services of OpenEvidence
OpenEvidence offers a comprehensive portfolio of products and services, including OpenEvidence App. The company's diverse product and service offerings are designed to meet the evolving needs of its customers, address market demands, and provide comprehensive solutions that drive value creation and customer satisfaction across various segments and use cases.
App providing multimedia and clinical findings for health professionals.
Funding Insights of OpenEvidence
OpenEvidence has successfully raised a total of $735M across 11 strategic funding rounds. The most recent funding activity was a Series D round of $250 million completed in January 2026. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding Total Funding
- Total Rounds 11
- Last Round Series D — $250.0M
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First Round
First Round
(01 Jan 2015)
- Investors Count 21
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Jan, 2026 | Amount | Series D - OpenEvidence | Valuation | Thrive Capital , DST Global | |
| Oct, 2025 | Amount | Series C - OpenEvidence | Valuation | Google Ventures | |
| Jul, 2025 | Amount | Series B - OpenEvidence | Valuation | Google Ventures , Kleiner Perkins |
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
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| Jul, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Jan, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
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Investors in OpenEvidence
OpenEvidence has secured backing from 21 investors, including venture fund, institutional, and angel investors. Prominent investors backing the company include Craft, Kleiner Perkins and Blackstone. This diverse investor base provides strategic capital, industry expertise, and valuable network connections that support the company's growth initiatives, market expansion, and long-term value creation.
| Investor | Description | Founded Year | Domain | Location |
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Sequoia Capital is engaged in venture capital investments.
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Corporate backed venture capital fund investing in multiple sectors
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Venture capital firm investing in early-stage tech startups
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Founded Year | Domain | Location |
| Investor | Description | Founded Year | Domain | Location |
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Single family office of Amitabh Bachchan, founder of Amitabh Bachchan Corporation or AB CORP
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Founded Year | Domain | Location | |
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Startup ecosystems are ignited through strategic investments by Signite Partners.
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Founded Year | Domain | Location | |
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Venture capital is directed toward companies in multiple sectors.
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Founded Year | Domain | Location | |
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Venture capital is invested in cybersecurity, fintech, and AI startups.
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Founded Year | Domain | Location |
Investments & Acquisitions by OpenEvidence
| Company Name | Description | Domain | Location | Founded Year | Amount |
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Bionic investment advisor platform
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2016 | ||||
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Fine Asian gourmet food is offered by an internet-first restaurant.
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2016 | ||||
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Physical e-commerce kiosks are deployed for rural purchases in Indonesia.
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Fine Asian gourmet food is offered by an internet-first restaurant.
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2016 |
Financial Statements - OpenEvidence
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
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| Jul, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Jan, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
Openevidence Comparisons
Competitors of OpenEvidence
OpenEvidence operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as iDoctus, Copient Health, QxMD, Nested Knowledge and Exonicus, among others. This competitive environment drives innovation, market differentiation, and strategic positioning as companies strive to capture market share and deliver value to their customers. Understanding the competitive dynamics is crucial for assessing market positioning, identifying growth opportunities, and navigating the challenges inherent in a competitive marketplace.
| Company Name | Domain | Founded year | HQ Location | Description |
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| domain | founded_year | HQ Location |
Medical app providing drug searches, interactions, and clinical tools for healthcare professionals.
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| domain | founded_year | HQ Location |
Predictive analysis solutions are provided for healthcare providers.
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| domain | founded_year | HQ Location |
Point-of-care digital tools are developed for healthcare professionals.
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| domain | founded_year | HQ Location |
Clinical evidence platform provided for pharma, device, and research entities.
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| domain | founded_year | HQ Location |
Medical training courses are offered to healthcare professionals.
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| Company Name | Domain | Founded year | HQ Location | Description |
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| domain | founded_year | HQ Location |
Multiple services are booked via an app-based platform.
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On-demand services are booked through an app-based platform.
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App based platform offering on demand delivery and ride-hailing services
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| domain | founded_year | HQ Location |
Operates an on-demand hyperlocal delivery app for food and groceries.
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Latest news on Openevidence
Frequently Asked Questions about OpenEvidence
When was OpenEvidence founded?
OpenEvidence was founded in 2021.
Where is OpenEvidence located?
OpenEvidence is headquartered in Cambridge, United States. It is registered at Cambridge, Massachusetts, United States.
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 Series B of $210M, raised on Jan 01, 2015.
What does OpenEvidence do?
OpenEvidence was founded in 2021 in Cambridge, United States, as an AI-powered platform in the healthcare sector. Clinically relevant evidence from peer-reviewed literature is aggregated, synthesized, and visualized to support healthcare professionals. Access to accurate medical information is facilitated, aiding informed decision-making in clinical practice. Operations focus on enhancing usability of medical resources for professionals in the field.
Who are the top competitors of OpenEvidence?
OpenEvidence's top competitors include Nested Knowledge, QxMD and Exonicus.
What products or services does OpenEvidence offer?
OpenEvidence offers OpenEvidence App.
Who are OpenEvidence's investors?
OpenEvidence has 21 investors. Key investors include Craft, Kleiner Perkins, Blackstone, European Union, and Sequoia Capital.