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Startups14,448Programs29

14,448 startups · 29 programs

Rubric AI

Active · Reasoning and verification infra for AI

YC profile

Why it ranks

How the rank works
4signal of 100 · rising 4
  • went through YCProgram · this site+4

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

Competitors

AISenseLabShared: training signal, infra, turnspeedrun SR007Mountain ViewStartup →AISureformShared: training signalYC X25San FranciscoStartup →AIDataRights AIShared: expert judgment, reasoningPlug and PlayUnited StatesStartup →
Companies closest to Rubric AI
Company
SenseLabShared: training signal, infra, turnspeedrun SR007Not statedAI, Data
SureformShared: training signalYC X25ActiveAI, Data
DataRights AIShared: expert judgment, reasoningPlug and Play Not statedAI

Adjacent

AIInvoShared: infraYC W25Startup →AIEnvariantShared: infra, reasoningYC W26San FranciscoStartup →OtherSmartanShared: verificationAlchemist Class 30DelawareStartup →AIModaicShared: infra, verification, judgmentspeedrun SR006San FranciscoStartup →AIArchangel HealthShared: infra, reasoning, judgmentYC F26San FranciscoStartup →
Companies next to Rubric AI
Company
InvoShared: infraYC W25ActiveAI
EnvariantShared: infra, reasoningYC W26ActiveAI, Devtools
SmartanShared: verificationAlchemist Class 30Not statedOther
ModaicShared: infra, verification, judgmentspeedrun SR006Not statedAI, Devtools
Archangel HealthShared: infra, reasoning, judgmentYC F26ActiveAI

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

  • Pragya SabooFounder/CEO

About Rubric AI

Rubric AI (backed by Y Combinator) is the reasoning and verification infrastructure for AI. We're building the human and computational layer that turns expert judgment into training signals for the world's most consequential AI systems.

YC batch
W26 · Winter 2026
Status, per YC
Active
Category
AI
Team size
1
Location
New York City, NY, USA
Founded
2025
Checked
10h ago

Rubric AI in W26: 199 companies, 81% AI

Rubric AI: questions

Which YC batch was Rubric AI in?

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

Is Rubric AI still active?

Y Combinator lists Rubric AI as active.

Who founded Rubric AI?

Rubric AI's founders, as listed on its YC page: Pragya Saboo (Founder/CEO).

Where is Rubric AI based?

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