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TrainLoop

YC W25

San Francisco, US · Founded 2025 · 6 employees · 1 known investors

trainloop.ai ↗

TrainLoop is a post-training research lab that trains specialized AI models for enterprise customers in pharma, biotech, logistics, and banking. The company develops custom foundation models and agents optimized for long-horizon tasks and mission-critical workflows in high-risk industries.

Founders & leadership· Y Combinator alumni (W25)

Jackson StokesinFounder

Mason Piercein𝕏Cofounder / CTO

Investors · 1

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Y CombinatorMountain View · $500K – $500K