AI infrastructure

Centaur

Website
Founded 2017Origin source ↗Checked 2026-10-29

Overview

The best AI models aren’t just trained and evaluated with human data; they’re built with superhuman data. The strongest datasets emerge through collective intelligence, where humans and machines work together to outperform either one alone. At Centaur, we create superior quality data by turning annotation into an arena where experts and AI compete.

Company description As recorded 2026-11-08

Founders & team

Previously Centaur Labs

Company history As recorded 2026-11-08

Tom Gellatly

Founder

Hello! I live in Durham, NC. I have a background in mobile and web development and engineering management. I studied CSE at the University of Michigan. I was the first employee at SF ride-sharing startup Sidecar, which was acquired by General Motors in 2016. I then managed the mapping & data labeling engineering teams at Cruise Automation for 1.5 years.

Founder profile As recorded 2026-10-29

Zach Rausnitz

Founder

I'm a self-taught, generalist software engineer. I cofounded Centaur Labs in 2017. Previously I worked as a full-stack software engineer at Washington City Paper, where many notable people in media got their start.

Founder profile As recorded 2026-10-29
45team members reported
Source-reported As recorded 2026-10-29

Founded 2017 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedBoston, MA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding year