YC Summer 2026 (S26) company

Tracer

Combining open-source AI models for better answers at lower cost

b2bmachine learningopen sourceaiopen source1 public signals

About Tracer

Tracer is an AI research lab building more capable and efficient AI through model coordination. We research adaptive inference, ensembling, and systems in which multiple open-source models work together to produce capabilities beyond any single model. Our work spans reasoning, code, research, and agentic systems, with the goal of making advanced intelligence more accessible and economical.

Public traction evidence

Each signal links to the public source used for attribution.

  1. YouTube

    Introducing Echo by Tracer

    Embedded in the official Tracer YC company page.