Trainloop
YC W25 ↗San Francisco, US · Founded 2025 · 6 employees · 3 known investors
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.
AI & Machine LearningDeep TechDeveloper ToolsEnterprise SoftwareGenerative AIReinforcement Learningin /trainloopai/@TrainLoop_aiycombinator.com ↗
Founders & leadership· Y Combinator alumni (W25)
JS
Jackson StokesinFounder
MP
Mason Piercein𝕏Cofounder / CTO
Investors · 3
In the news
- TrainLoop: Unlock Next-Level Reasoning through Fine-Tuningycombinator.com · 2025