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Startups14,448Programs29

14,448 startups · 29 programs

Centaur

Active · We Create Superior Data By Making Annotation Competitive

WebsiteYC profile

Why it ranks

How the rank works
15signal of 100 · rising 2
  • team of 45Team size · YC's directory+8.6
  • went through YCProgram · this site+4
  • hiringHiring · Titles (titles.fru.dev), YC+2

A sum of public facts, not a judgement and not investment advice.

Competitors

AIHuman DxShared: collective intelligence, human, machineYC S12San FranciscoStartup →AIDataspan AIShared: create superior, data, expertPlug and PlayUnited StatesStartup →AIAlikeShared: collective intelligence, workspeedrun SR006San FranciscoStartup →AIVerge GenomicsShared: human data, dataset, machineYC S15San FranciscoStartup →AISelectstar, Inc.Shared: quality data, annotation, modelPlug and PlaySouth KoreaStartup →
Companies closest to Centaur
Company
Human DxShared: collective intelligence, human, machineYC S12ActiveAI
Dataspan AIShared: create superior, data, expertPlug and Play Not statedAI
AlikeShared: collective intelligence, workspeedrun SR006Not statedAI
Verge GenomicsShared: human data, dataset, machineYC S15ActiveAI
Selectstar, Inc.Shared: quality data, annotation, modelPlug and Play Not statedAI, Data

Adjacent

AISieveShared: quality data, data labeling, modelYC W22San FranciscoStartup →AIProlificShared: quality data, human, modelYC S19LondonStartup →OtherBoilrShared: work togetherAntler 2023FranceStartup →AIPerit.AIShared: data labeling, expertYC F26San FranciscoStartup →AICortex AIShared: human data, dataset, modelYC F25San FranciscoStartup →
Companies next to Centaur
Company
SieveShared: quality data, data labeling, modelYC W22 +1ActiveAI, Data, Devtools
ProlificShared: quality data, human, modelYC S19ActiveAI
BoilrShared: work togetherAntler 2023Not statedOther
Perit.AIShared: data labeling, expertYC F26ActiveAI, Data
Cortex AIShared: human data, dataset, modelYC F25ActiveAI

Also from W19 in AI

All of W19
AI1910Multimodal AI Platform for Modality Agnostic Drug Discovery™YC W19BostonStartup →AIAcquiredAccept.inc (formerly BoardRE)BoardRE is a new type of mortgage company that upgrades any offer…YC W19DenverStartup →AIAccioJobOffline-first tech skilling and placement for IndiaYC W19GurugramStartup →AIAI InsuranceAI Insurance is the platform that runs insurance companiesYC W19New York CityStartup →AIAllSome FulfillmentFulfillment platform to build Southeast Asia e-commerce operationsYC W19Kuala LumpurStartup →AIAcquiredAllure SystemsA.I. to create stunning fashion images for eCommerce.YC W19New York CityStartup →
Company
1910Multimodal AI Platform for Modality Agnostic Drug Discovery™team of 20ActiveAI
Accept.inc (formerly BoardRE)BoardRE is a new type of mortgage company that upgrades any offer…team of 80acquiredAcquiredAI
AccioJobOffline-first tech skilling and placement for Indiateam of 120ActiveAI
AI InsuranceAI Insurance is the platform that runs insurance companiesteam of 16ActiveAI
AllSome FulfillmentFulfillment platform to build Southeast Asia e-commerce operationsteam of 18ActiveAI
Allure SystemsA.I. to create stunning fashion images for eCommerce.team of 18acquiredAcquiredAI

About Centaur

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.

YC batch
W19 · Winter 2019
Status, per YC
Active
Category
AI, Data
Team size
45
Location
Boston, MA, USA
Checked
6h ago

YC tags: Data Science, Crowdsourcing, Data Labeling, AI

Changes seen

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗
HiringOct 5, 2026

Started hiring.

Source ↗

Centaur in W19: 194 companies, 27% AI

Centaur: questions

Which YC batch was Centaur in?

Centaur was in Y Combinator's Winter 2019 batch (W19).

Is Centaur still active?

Y Combinator lists Centaur as active.

Where is Centaur based?

Centaur lists Boston, MA, USA as its location on YC's directory.