Rubric AI builds reasoning and verification infrastructure for AI, creating the human and computational layer that turns expert judgment into training signals for frontier models and agents. The company focuses on capturing expert evaluation to improve model reasoning and verification. It was founded in 2025 by two technical founders with backgrounds at Oscar Health, Meta, Apple, and Snap. Rubric AI is part of Y Combinator's Winter 2026 batch.
Rubric AI
ActiveReasoning and verification infra for AI
Total raised
$500K
1 round
Stage
Seed
Jan 2026
Team
1-10
since 2026
Pricing
—
Founded
2026
New York, United States
Agent-ready
—
Reasoning and verification infrastructure for AI
Turns expert judgment into training signals
Human-plus-computational evaluation layer
Captures expert evaluation for model improvement
Targets frontier models and AI agents
Focus on improving model reasoning quality
Verification signals for agent outputs
Founded by technical founders from Oscar Health, Meta, Apple, and Snap
12/100
Early
MCP server
Public API
Webhooks
OAuth 2.0
SDKs
No public agent surfaces detected yet.
Jan 2026 Seed $500K ● Y Combinator
Capital network
$500K raised ·1 backer·10 network links
- Backers1
- Shared portfoliocompanies these backers also fund
- Extended networkfunds that co-invest alongside them
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- What does Rubric AI build?
- It builds reasoning and verification infrastructure for AI, the human and computational layer that turns expert judgment into training signals for frontier models and agents.
- Why is verification infrastructure important?
- Improving model reasoning and trusting agent outputs requires high-quality evaluation. Rubric captures expert judgment and turns it into signals that improve models.
- Who is Rubric AI for?
- Teams building frontier models and AI agents that need better reasoning and verification through expert-driven evaluation.
- Who founded Rubric AI?
- It was founded in 2025 by two technical founders with backgrounds at Oscar Health, Meta, Apple, and Snap.
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