Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Sepal AI

Acquired · Data Development for Advanced AI

WebsiteYC profile

Why it ranks

How the rank works
14signal of 100 · rising 7
  • team of 15Team size · YC's directory+6.2
  • acquiredOutcome · YC, program pages, Acquisitions+4
  • went through YCProgram · this site+4

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

Competitors

AICoArenaShared: data labeling, reinforcement learning, aiopsYC S26San FranciscoStartup →AIOoak DataShared: training data, reinforcement learning, turnYC S26San FranciscoStartup →AIhillclimbShared: training data, reinforcement learning, labsYC F25San FranciscoStartup →AIDatoricShared: training data, data labeling, datasetYC S26San FranciscoStartup →AICartpoleShared: data labeling, reinforcement learning, trainingYC X25San FranciscoStartup →
Companies closest to Sepal AI
Company
CoArenaShared: data labeling, reinforcement learning, aiopsYC S26ActiveAI, Data, Devtools
Ooak DataShared: training data, reinforcement learning, turnYC S26ActiveAI
hillclimbShared: training data, reinforcement learning, labsYC F25ActiveAI, Devtools
DatoricShared: training data, data labeling, datasetYC S26ActiveAI, Data
CartpoleShared: data labeling, reinforcement learning, trainingYC X25ActiveAI, Data

Adjacent

AISherpa LabsShared: data labeling, reinforcement learningYC W25San FranciscoStartup →AIEpsilabShared: data labeling, reinforcement learning, trainingYC F26San FranciscoStartup →AIidlerShared: data research, reinforcement learning, labsYC S25San FranciscoStartup →AITensorTestShared: training data, data labeling, evaluationYC W26San FranciscoStartup →AIMarkovShared: data labeling, reinforcement learning, datasetYC S26San FranciscoStartup →
Companies next to Sepal AI
Company
Sherpa LabsShared: data labeling, reinforcement learningYC W25ActiveAI, Data
EpsilabShared: data labeling, reinforcement learning, trainingYC F26ActiveAI, Data
idlerShared: data research, reinforcement learning, labsYC S25ActiveAI, Devtools
TensorTestShared: training data, data labeling, evaluationYC W26ActiveAI, Data
MarkovShared: data labeling, reinforcement learning, datasetYC S26ActiveAI, Data, Devtools

Also from S24 in AI

All of S24
AICallbackEffortless AI automation for business operationsYC S24San FranciscoStartup →AIDomu Technology Inc.AI Agents for collectionsYC S24San FranciscoStartup →AIElevateAutomated AI data integrations for roll-upsYC S24New York CityStartup →AIHyrexThe COLD Task FrameworkYC S24San FranciscoStartup →AILaminarUnderstand why your AI agent breaks. Iterate fast to fix it.YC S24LondonStartup →AIPipeshiftInference for real-time agentsYC S24San FranciscoStartup →
Company
CallbackEffortless AI automation for business operationsteam of 2ActiveAI
Domu Technology Inc.AI Agents for collectionsteam of 50hiringActiveAI, Devtools
ElevateAutomated AI data integrations for roll-upsteam of 102 programsActiveAI
HyrexThe COLD Task Frameworkteam of 3ActiveAI, Devtools
LaminarUnderstand why your AI agent breaks. Iterate fast to fix it.team of 6ActiveAI, Devtools
PipeshiftInference for real-time agentsteam of 10ActiveAI, Devtools

Founders

  • Robi LinFounder
  • Kat HuFounder

About Sepal AI

Sepal is a data research company on a mission to advance human knowledge and capabilities through safe AI. We partner with the world’s leading AI labs and enterprises to help their models get better at the tasks people actually want them to do. We’ve built a Cloud-Native Agent Dataset Factory which turns the process of generating evaluation and training data from manual, inconsistent, and labor-intensive into something automated, standardized, and scalable. Sepal AI was founded in 2024 by engineers and operators from Vercel and Turing. We went through Y Combinator, raised several million dollars from leading investors, and already count multiple Fortune 500s and top AI research labs as paying customers.

YC batch
S24 · Summer 2024
Status, per YC
Acquired
Category
AI, Data
Team size
15
Location
San Francisco, CA, USA
Founded
2024
Checked
9h ago

YC tags: AIOps, Reinforcement Learning, Data Labeling, AI

Sepal AI in S24: 248 companies, 85% AI

LinkedIn

Sepal AI: questions

Which YC batch was Sepal AI in?

Sepal AI was in Y Combinator's Summer 2024 batch (S24).

Is Sepal AI still active?

Y Combinator lists Sepal AI as acquired.

Who founded Sepal AI?

Sepal AI's founders, as listed on its YC page: Robi Lin (Founder), Kat Hu (Founder).

Where is Sepal AI based?

Sepal AI lists San Francisco, CA, USA as its location on YC's directory.