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Rubric AI
ActiveReasoning 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
↻ Pivot / rename signal
This company has previously operated under “Bazaar AI”. A rename frequently marks a pivot in positioning or product — useful raw material for variant ideas.
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 · 1
Pragya SabooFounder
cofounder at Rubric AI; previously product at Asana, Oscar Health, and Apella
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