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Rubric AI

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Reasoning and verification infra for AI

Winter 2026Founded 20252 peopleNew York City, NY, USA
AI insightcan contain mistakes
AI Reasoning & VerificationSaaSAI labs, model developers, AI safety teamsMedium competition
Moat
Proprietary human-in-the-loop workflows; dataset of verification signals; partnerships with model developers; safety credentials.
Key risk
Model developers may build in-house verification tools; rapid obsolescence as AI systems improve self-verification.
Why now
Frontier model development requires increasingly sophisticated evaluation; AI safety becoming critical and regulated.
Competitors
Anthropic internal tools, OpenAI evals, Scale AI, Apollo Research

About

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.

Founders ยท 1

Pragya Saboo
Pragya SabooFounder

cofounder at Rubric AI; previously product at Asana, Oscar Health, and Apella

Launch

Launched on Y Combinator ยท Mar 2026
View launch post โ†—

Reasoning and Verification for AI Agents

Rubric AI builds runtime reasoning infrastructure that turns expert judgment into training signals for frontier models and agents. It provides purpose-built reasoning environments, curates expert-verified reasoning traces, and guides agents at test time to reason, select tools, verify steps, and escalate to humans, enabling domain-specialist performance in high-stakes AI applications.

Formerly โ€œBazaar AIโ€

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