Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

MouseCat

Active · AI to fight financial crime

WebsiteYC profile

Why it ranks

How the rank works
8signal of 100 · rising 8
  • team of 6Team size · YC's directory+4.4
  • went through YCProgram · this site+4

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

Competitors

AIFinicShared: automate investigation, financial crime, fraud detectionYC W23San FranciscoStartup →AIAlphaguardShared: financial crimeAntler 2024FranceStartup →AIOverwatchShared: financial crime, fraud detection, automateYC S22New York CityStartup →AIFlagrightShared: financial crime, complianceYC W22San FranciscoStartup →AIVarianceShared: compliance, investigation, fortuneYC W23San FranciscoStartup →
Companies closest to MouseCat
Company
FinicShared: automate investigation, financial crime, fraud detectionYC W23ActiveAI
AlphaguardShared: financial crimeAntler 2024Not statedAI
OverwatchShared: financial crime, fraud detection, automateYC S22ActiveAI
FlagrightShared: financial crime, complianceYC W22ActiveAI
VarianceShared: compliance, investigation, fortuneYC W23ActiveAI

Adjacent

OtherCorverisShared: crimeSPC 2024San FranciscoStartup →OtherSonarShared: financial crime, fraud, moneyPlug and PlayUnited StatesStartup →AIBallerineShared: fraud detection, compliance, financialYC S22Tel Aviv-YafoStartup →Developer toolsVerifiableShared: complianceYC S20San FranciscoStartup →AIROEShared: compliance, financialYC W24San FranciscoStartup →
Companies next to MouseCat
Company
CorverisShared: crimeSPC 2024Not statedOther
SonarShared: financial crime, fraud, moneyPlug and Play Not statedOther
BallerineShared: fraud detection, compliance, financialYC S22ActiveAI
VerifiableShared: complianceYC S20ActiveDevtools
ROEShared: compliance, financialYC W24ActiveAI, Devtools

Also from W26 in AI

All of W26
AI/dev/fast/dev/fast is the AI-native code forgeYC W26San FranciscoStartup →AI10x ScienceThe AI-native platform for next-generation protein characterization.YC W26San FranciscoStartup →AI21stUI building blocks for the agentic internetYC W26San FranciscoStartup →AIAemonThe Forward-Deployed AI Research EngineerYC W26San FranciscoStartup →AIAgentic FabriqThe control plane for AI agents.YC W26San FranciscoStartup →AIAlt-XBuilding the best venue for private markets exposure.YC W26Los AngelesStartup →
Company
/dev/fast/dev/fast is the AI-native code forgeteam of 4ActiveAI, Devtools
10x ScienceThe AI-native platform for next-generation protein characterization.team of 5hiringActiveAI
21stUI building blocks for the agentic internetteam of 3ActiveAI, Devtools
AemonThe Forward-Deployed AI Research Engineerteam of 3hiringActiveAI, Devtools
Agentic FabriqThe control plane for AI agents.team of 2ActiveAI
Alt-XBuilding the best venue for private markets exposure.team of 2ActiveAI, Data

Founders

  • Nicholas AldridgeFounder/CEO
  • Joseph McAllisterFounder/CTO

About MouseCat

MouseCat enables companies to detect suspicious activity, automate investigations, and act before the money leaves. We work with Fortune 500 companies and startups to deploy real-time models and AI agents that reduce fraud, compliance incidents, and friction for good customers.

YC batch
W26 · Winter 2026
Status, per YC
Active
Category
AI
Team size
6
Location
New York City, NY, USA
Founded
2026
Checked
6h ago

YC tags: Compliance, Fraud Detection

MouseCat in W26: 199 companies, 81% AI

LinkedIn

MouseCat: questions

Which YC batch was MouseCat in?

MouseCat was in Y Combinator's Winter 2026 batch (W26).

Is MouseCat still active?

Y Combinator lists MouseCat as active.

Who founded MouseCat?

MouseCat's founders, as listed on its YC page: Nicholas Aldridge (Founder/CEO), Joseph McAllister (Founder/CTO).

Where is MouseCat based?

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