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Centaur Labs

Health · Boston, United States · Founded 2017

Provides expert medical and scientific data annotation to accelerate AI development in healthcare and life sciences MoreLess

Centaur Labs is a specialized data annotation platform focused on the healthcare and life sciences sectors. The company leverages a global network of thousands of medical professionals, researchers, and students to deliver high-quality, expert-verified data labeling for complex medical datasets. Centaur Labs integrates directly into clients’ data pipelines via end-to-end API solutions, enabling seamless and scalable annotation workflows.

The platform emphasizes rigorous quality control by continuously measuring labeler performance and only including annotations from contributors who meet strict quality benchmarks. Labelers are incentivized through mobile-first, performance-based competitions, ensuring consistent effort and accuracy. Each case receives multiple independent reads, with additional scrutiny applied to ambiguous examples, enhancing data reliability.

Centaur Labs provides clients with granular, labeler-level insights and comprehensive statistical analyses, such as precision-recall curves, label distribution, and agreement metrics. This transparency allows organizations to proactively identify edge cases, understand dataset nuances, and optimize model development. The company also upholds leading security and privacy standards, ensuring sensitive health data is handled with care.

Centaur Labs supports a wide range of applications, including software as a medical device, AI-enabled diagnostics, drug discovery, insurance claims processing, and AI-driven wellness solutions.

Keywords: data annotation, medical AI, healthcare data, quality control, expert labeling, API integration, medical device, drug discovery, machine learning, data privacy, edge cases, model development, real-world evidence, insurance claims, AI wellness, statistical insights

Company overview

Centaur Labs company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2017
Headquarters
Boston, United States
Employees
72
Open positions
None listed
Dealroom signal
87.2
client focusb2btechnologyArtificial IntelligencetechnologyMachine LearningtechnologyNatural Language ProcessingsectorHealth Care Information Technologybusiness modelSaaSindustryHealthsectorDeveloper ToolssectorClinicalsectorCore AIsectorMedical DatasectorDeveloper KitsectorTech for Biotech and PharmasectorGenerative AI

Valuation & funding

Centaur Labs funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES BEquity / VC Oct 2024 $16M $64M Susa Ventures · Omega Venture Partners · Accel · SignalFire
SUPPORT PROGRAMOther financing Dec 2022 $0 PharmStars
SERIES AEquity / VC Aug 2021 $15M $60M Global Founders Capital · Y Combinator · Tom Lee · Matrix Partners
SEEDEquity / VC Jun 2019 $4M $16M Global Founders Capital · LEO Innovation Lab · Hack VC · Accel
SEEDEquity / VC Mar 2019 $125K $2M Y Combinator
SEEDEquity / VC Sep 2018 Undisclosed
Showing 6 recorded eventsUnlock the complete deal history →

Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 78
2025 73
2024 43
2023 33
2022 31
2021 24
Company filings, research estimates and Dealroom dataOpen the full financial model →

Growth signals

Centaur Labs website traffic

Latest recorded traffic for Centaur Labs is 14K monthly website visits, up 27.3% over the last three months. Centaur Labs's team declined 1.4% over the past year.

Latest monthly visits14K 3-month web change+27.3% 1-year team growth-1.4%
Monthly website visits94 observations · May 2018–Jul 2026
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Comparisons

Centaur Labs compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Talent graph

Centaur Labs's talent

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Team profiled 16 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

20 investors on Centaur Labs's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Seed 5 investors entered at this stage
Series A 10 investors entered at this stage
Matrix Partners
Tom Lee
Susa Ventures
Elliot Cohen
John Capodilupo
SignalFire
Omega Venture Partners
Matrix
Alumni Ventures
Samsung Next
Other known 5 additional known investors
PharmStars
186 Ventures
Daniel Ramirez
Grant Park Ventures
Virtue VC

Global footprint

Where Centaur Labs has talent and traffic

Workforce by country
8 countries with
team presence
🇺🇸 United States85.7%
🇧🇷 Brazil3.6%
🇪🇬 Egypt1.8%
🇨🇦 Canada1.8%
🇳🇱 Netherlands1.8%
Top 5 of 8 shown

In the news

Latest news about Centaur Labs

Recent press, funding announcements, and product moves mentioning Centaur Labs — open to read from the original sources.

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Market sentiment

What the market is saying about Centaur Labs

An AI-synthesized read of the highest-engagement posts about Centaur Labs on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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