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Startups14,448Programs29

14,448 startups · 29 programs

Blue Onion

Active · Financial data layer for AI-powered finance and accounting

WebsiteYC profile

Why it ranks

How the rank works
14signal of 100 · rising 3
  • team of 27Team size · YC's directory+7.5
  • 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

AIKinterShared: finance, accountingYC W20San FranciscoStartup →AILabricShared: data layer, messy, cleanYC X25San FranciscoStartup →AIEncordShared: data layer, machine learning, messyYC W21LondonStartup →AILiveFlowShared: finance, accounting, transformYC W21New York CityStartup →OtherAlephShared: financial data, financeYC S21New York CityStartup →OtherRilletShared: finance, accountingStartup →
Companies closest to Blue Onion
Company
KinterShared: finance, accountingYC W20ActiveAI
LabricShared: data layer, messy, cleanYC X25ActiveAI, Data
EncordShared: data layer, machine learning, messyYC W21ActiveAI, Devtools
LiveFlowShared: finance, accounting, transformYC W21 +1ActiveAI
AlephShared: financial data, financeYC S21ActiveOther
Rilletnot in a program hereShared: finance, accountingElsewhereOther

Adjacent

OtherMeckaShared: data layerNeoStartup →AINetRanksShared: data layerAntler 2025SingaporeStartup →AIPeckishShared: data layer, poweredAntler 2023NetherlandsStartup →AIMundo AIShared: data layer, machine learningYC W25VancouverStartup →AIRima AI (formerly Garage)Shared: financial data, finance, messyYC S22AustinStartup →
Companies next to Blue Onion
Company
MeckaShared: data layerNeo Not statedOther
NetRanksShared: data layerAntler 2025Not statedAI
PeckishShared: data layer, poweredAntler 2023Not statedAI
Mundo AIShared: data layer, machine learningYC W25ActiveAI, Devtools
Rima AI (formerly Garage)Shared: financial data, finance, messyYC S22ActiveAI, Data

Also from S20 in AI

All of S20
AIadynThe first test designed to prevent birth control side effectsYC S20SeattleStartup →AIAcquiredAquarium LearningWe help ML teams improve their models by improving their datasetsYC S20San FranciscoStartup →AIAcquiredBandit MLBandit ML builds machine learning tools for e-commerce companies.YC S20San FranciscoStartup →AIBlisswayThe tolling industry’s prime tech infrastructureYC S20DenverStartup →AIClauThe real estate superapp for MexicoYC S20Mexico CityStartup →AIAcquiredHumanloopHumanloop is the LLM evals platform for enterprises.YC S20San FranciscoStartup →
Company
adynThe first test designed to prevent birth control side effectsteam of 7hiringActiveAI
Aquarium LearningWe help ML teams improve their models by improving their datasetsteam of 12acquiredAcquiredAI, Devtools
Bandit MLBandit ML builds machine learning tools for e-commerce companies.acquiredteam of 4AcquiredAI
BlisswayThe tolling industry’s prime tech infrastructureteam of 22hiringActiveAI
ClauThe real estate superapp for Mexicoteam of 902 programsActiveAI
HumanloopHumanloop is the LLM evals platform for enterprises.team of 14acquired by AnthropicAcquiredAI, Devtools

About Blue Onion

Blue Onion is the data backbone for tomorrow’s AI-powered finance teams, a subledger platform that transforms messy, scattered transactions into clean, reconciled, and automation-ready data.

YC batch
S20 · Summer 2020
Status, per YC
Active
Category
AI
Team size
27
Location
New York City, NY, USA
Checked
9h ago

YC tags: Machine Learning, Finance, AI

Changes seen

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗

Blue Onion in S20: 209 companies, 28% AI

Blue Onion: questions

Which YC batch was Blue Onion in?

Blue Onion was in Y Combinator's Summer 2020 batch (S20).

Is Blue Onion still active?

Y Combinator lists Blue Onion as active.

Where is Blue Onion based?

Blue Onion lists New York City, NY, USA as its location on YC's directory.