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14,448 startups · 29 programs

Sixtyfour

Active · Intelligence Infrastructure on People and Entities

WebsiteYC profile

Why it ranks

How the rank works
12signal of 100 · rising 8
  • team of 12Team size · YC's directory+5.8
  • 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

DataInactiveStreamdalShared: data quality, infrastructureYC S20PortlandStartup →AIVelum LabsShared: data quality, infrastructureYC W26San FranciscoStartup →DataAvoShared: data qualityYC W19ReykjavíkStartup →OtherFireworks AIShared: intelligence infrastructureStartup →
Companies closest to Sixtyfour
Company
StreamdalShared: data quality, infrastructureYC S20InactiveData, Devtools
Velum LabsShared: data quality, infrastructureYC W26ActiveAI, Data
AvoShared: data qualityYC W19ActiveData, Devtools
Fireworks AInot in a program hereShared: intelligence infrastructureElsewhereOther

Adjacent

AIAdenShared: infrastructure, open, sourceYC W20San FranciscoStartup →OtherKrixoShared: surface risk, intelligenceGoogle AI for Cybersecurity 2025ColombiaStartup →Developer toolsPlanetscaleShared: infrastructure, databaseSPC 2018San FranciscoStartup →AINaïveShared: infrastructure, agentYC X25San FranciscoStartup →AIInkboxShared: infrastructure, identity, agentYC S26San FranciscoStartup →
Companies next to Sixtyfour
Company
AdenShared: infrastructure, open, sourceYC W20ActiveAI, Devtools
KrixoShared: surface risk, intelligenceGoogle AI for Cybersecurity 2025Not statedOther
PlanetscaleShared: infrastructure, databaseSPC 2018Not statedDevtools
NaïveShared: infrastructure, agentYC X25ActiveAI, Devtools
InkboxShared: infrastructure, identity, agentYC S26ActiveAI, Devtools

Also from X25 in AI

All of X25
AIAdentrisReal-time AI Compliance & Revenue Integrity for Medical ProvidersYC X25San FranciscoStartup →AIAttuneFaster builds, zero effort.YC X25San FranciscoStartup →AIAcquiredBlaxelThe infrastructure for autonomous agentsYC X25San FranciscoStartup →AIBoost RoboticsRobots for the inspection and maintenance of data centersYC X25BostonStartup →AICapacitiveThe data gateway for agents.YC X25San FranciscoStartup →AIDocketAI agents for web testingYC X25San FranciscoStartup →
Company
AdentrisReal-time AI Compliance & Revenue Integrity for Medical Providersteam of 5hiringActiveAI
AttuneFaster builds, zero effort.team of 3hiringActiveAI, Devtools
BlaxelThe infrastructure for autonomous agentsteam of 12acquiredAcquiredAI, Devtools
Boost RoboticsRobots for the inspection and maintenance of data centersteam of 2ActiveAI, Devtools
CapacitiveThe data gateway for agents.team of 2ActiveAI, Devtools
DocketAI agents for web testingteam of 2ActiveAI, Devtools

Founders

  • Saarth ShahFounder/CEO
  • Christopher PriceFounder/COO

About Sixtyfour

Sixtyfour deploys AI agents that investigate people and companies across the open and dark web, official records, proprietary databases, and unstructured sources. We resolve identities, map entity relationships, and surface risk signals for teams where data quality is essential.

YC batch
X25 · Spring 2025
Status, per YC
Active
Category
AI, Developer tools
Team size
12
Location
San Francisco, CA, USA
Founded
2025
Checked
6h ago

YC tags: B2B, Enterprise Software, Infrastructure, AI

Sixtyfour in X25: 144 companies, 90% AI

LinkedIn

Sixtyfour: questions

Which YC batch was Sixtyfour in?

Sixtyfour was in Y Combinator's Spring 2025 batch (X25).

Is Sixtyfour still active?

Y Combinator lists Sixtyfour as active.

Who founded Sixtyfour?

Sixtyfour's founders, as listed on its YC page: Saarth Shah (Founder/CEO), Christopher Price (Founder/COO).

Where is Sixtyfour based?

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