# Centaur AI

> Centaur AI (Centaur Labs) is a Boston-based healthcare data annotation platform that taps a network of 50,000+ vetted medical and scientific experts to label, evaluate, and monitor the multimodal data that powers medical AI. Born out of MIT's Center for Collective Intelligence, the company uses performance-weighted 'wisdom of the crowd' methods - delivered through its gamified DiagnosUs app - to produce labels that match or beat individual specialists, on a HIPAA-compliant, SOC 2 platform.

- **Founded:** 2017
- **Headquarters:** Boston, Massachusetts, United States
- **Founders:** Erik Duhaime (Co-Founder & CEO), Zach Rausnitz (Co-Founder & CTO), Tom Gellatly (Co-Founder & VP of Engineering)
- **Team size:** ~78 employees
- **Products:** Centaur AI Annotation Platform, DiagnosUs, Model Evaluation, On-Demand Labeling
- **Notable:** Raised ~$35M total across Series A ($15M) and an oversubscribed $16M+ Series B., Built a network of 50,000+ medical and scientific experts., Research showed performance-weighted crowds of medical students out-classified experienced dermatologists on dermoscopic images.

## Products & services

- **Centaur AI Annotation Platform** — Expert data annotation across text, images, audio, video, and waveform (EEG/ECG) modalities for AI model training, evaluation, monitoring, and feedback - on a HIPAA-compliant, SOC 2 platform.
- **DiagnosUs** — A gamified mobile app where medical and scientific experts compete to label real-world biomedical data and earn cash prizes for accuracy. Performance on hidden test cases determines whose opinions get weighted.
- **Model Evaluation** — Expert-led benchmarking and validation of AI models, including LLMs and medical imaging models, to surface edge cases and measure real-world reliability.
- **On-Demand Labeling** — A fast-turnaround offering that delivers expert labels in under 30 minutes rather than days.

## Achievements

- Raised ~$35M total across Series A ($15M) and an oversubscribed $16M+ Series B.
- Built a network of 50,000+ medical and scientific experts.
- Research showed performance-weighted crowds of medical students out-classified experienced dermatologists on dermoscopic images.
- Improved Eight Sleep snore detection from 70% to 93%.
- Delivers expert labels in under 30 minutes via on-demand platform; customers report up to 20X ROI.
- Featured by MIT News for gamifying medical data labeling to advance AI.
- HIPAA-compliant and SOC 2 certified platform.

## Latest updates

- **2024-10** — Closed an oversubscribed $16M+ Series B led by SignalFire, with Matrix, Accel, Susa, Omega, Y Combinator, Samsung Next, and Alumni Ventures.
- **2024-10** — Launched on-demand labeling delivering expert results in under 30 minutes; rebranded toward the centaur.ai identity.

## Links

- Website: https://centaur.ai
- LinkedIn: https://www.linkedin.com/company/centaur-labs
- Twitter/X: https://twitter.com/centaurlabs

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Profile page: https://yespress.io/centaur-ai
Published by YesPress — https://yespress.io
Last updated: 2026-06-07