Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Ploid

Active · The people data company for the agent era

WebsiteYC profile

Why it ranks

How the rank works
7signal of 100 · rising 7
  • went through YCProgram · this site+4
  • team of 2Team size · YC's directory+2.5

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

Competitors

AIAgentPhoneShared: phone number, identity, agentYC X26San FranciscoStartup →AIKairoShared: agent era, combine, traditionalspeedrun SR007San FranciscoStartup →AIMetriportShared: data infrastructure, api, informationYC S22San FranciscoStartup →AIPixelTableShared: data infrastructureSPC 2024San FranciscoStartup →Developer toolsBurnerShared: phone number, data, developer500 Global 2012United StatesStartup →
Companies closest to Ploid
Company
AgentPhoneShared: phone number, identity, agentYC X26ActiveAI
KairoShared: agent era, combine, traditionalspeedrun SR007Not statedAI, Data, Devtools
MetriportShared: data infrastructure, api, informationYC S22ActiveAI, Devtools
PixelTableShared: data infrastructureSPC 2024Not statedAI, Devtools
BurnerShared: phone number, data, developer500 Global 2012Not statedDevtools

Adjacent

OtherFullcontactShared: identity resolution, enrich, resolve500 Global 2011CanadaStartup →AIInactiveFirstQuadrantShared: data infrastructure, salesYC S21San FranciscoStartup →OtherCityweftShared: data infrastructure, eraAntler 2024DenmarkStartup →OtherShip2MyIDShared: phone number, identity, emailPlug and PlayUnited StatesStartup →OtherRigShared: data infrastructureEF 2026LondonStartup →
Companies next to Ploid
Company
FullcontactShared: identity resolution, enrich, resolve500 Global 2011Not statedOther
FirstQuadrantShared: data infrastructure, salesYC S21InactiveAI
CityweftShared: data infrastructure, eraAntler 2024Not statedOther
Ship2MyIDShared: phone number, identity, emailPlug and Play Not statedOther
RigShared: data infrastructureEF 2026Not statedOther

Also from F26 in AI

All of F26
AIFrontrunnerEngineer your GTMYC F26San FranciscoStartup →AIPhone HarnessLet your agent control your phoneYC F26San FranciscoStartup →AIPomeradoTurn any website into an MCP for your agents, in minutesYC F26San FranciscoStartup →AITerseDurable state for AI agentsYC F26New York CityStartup →AI0.securityThe autonomous cybersecurity teamYC F26San FranciscoStartup →AIAcyclic LabsAgent swarms that make long-running tasks exponentially fasterYC F26LondonStartup →
Company
FrontrunnerEngineer your GTMteam of 3ActiveAI
Phone HarnessLet your agent control your phoneActiveAI, Devtools
PomeradoTurn any website into an MCP for your agents, in minutesteam of 2ActiveAI, Devtools
TerseDurable state for AI agentsteam of 2ActiveAI, Devtools
0.securityThe autonomous cybersecurity teamteam of 2ActiveAI, Devtools
Acyclic LabsAgent swarms that make long-running tasks exponentially fasterteam of 2ActiveAI, Devtools

About Ploid

Ploid is the AI-native people data infrastructure for developers and companies building products, workflows, and agents around people. We've built an index of 2B+ people across professional and social sources, giving developers one API to search for people, enrich profiles, find emails and phone numbers, resolve identities, and retrieve up-to-date information from across the web. Unlike traditional people databases built around static records, Ploid combines its massive people index with real-time retrieval and identity resolution, delivering fresh, reliable information whenever it's needed. From sales and recruiting to customer intelligence, trust and safety, and AI agents, Ploid replaces fragmented data providers with a single infrastructure layer. 2B+ people. One API. Built for AI.

YC batch
F26 · Fall 2026
Status, per YC
Active
Category
AI, Developer tools
Team size
2
Location
San Francisco, CA, USA
Checked
6h ago

YC tags: Sales, API, AI

Changes seen

TagsOct 19, 2026

No longer tagged Artificial Intelligence.

Source ↗
Team sizeOct 12, 2026

Team went from 0 to 2 people.

Source ↗
Joined a programOct 8, 2026

Joined Y Combinator's Fall 2026 batch (F26).

Source ↗

Ploid in F26: 219 companies, 89% AI

Ploid: questions

Which YC batch was Ploid in?

Ploid was in Y Combinator's Fall 2026 batch (F26).

Is Ploid still active?

Y Combinator lists Ploid as active.

Where is Ploid based?

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