MarkosWebWeb intelligence for the agentic economy

Rubric AI

ActiveAI-native

Reasoning and verification infra for AI

What it does

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.

Next to it in Agent infrastructure · reasoning and verification infrastructure

  • EnvariantY Combinator W26

    Interpretability and reasoning infra for foundation models.

  • OrthogonalY Combinator W26

    Agentic Payments for APIs

  • MavenY Combinator W26

    Payments for Conversational Agents

  • Modaica16z speedrun SR006

    Verification & alignment infra for AI decisioning.

  • ArmatureY Combinator X26

    We get your product picked by coding agents.

  • General InstinctY Combinator X26

    Deployment infrastructure for Physical AI

  • InsForge (InstaCloud)Y Combinator X26

    The agent-native serverless cloud

  • Keyframe LabsY Combinator X26

    Bring AI to life with the world's best interactive avatars