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TrainLoop

TrainLoop

Winter 2025

Reasoning Fine-Tuning

Developer ToolsGenerative AIReinforcement Learning

About Company

TrainLoop makes it effortless for developers to supercharge LLM performance through reinforcement learning.

Active Founders

Jackson Stokes

Jackson Stokes

Founder

Cofounder at TrainLoop; I optimize language models. Previously, I worked on kernel level optimizations for Gemini at Google, and framework level optimizations on video models at Google Research.

Mason Pierce

Mason Pierce

Cofounder / CTO

My background is in applying AI models to business use-cases and have always found fine-tuning to be way harder than it should be - My mission is to unlock fine-tuning for all builders :)

Company Facts

LocationSan Francisco, CA, USA
Team Size6
Founded2025
StatusActive