Sepal AI
AcquiredAI-nativeData Development for Advanced AI
What it does
Sepal is a data research company on a mission to advance human knowledge and capabilities through safe AI. We partner with the world’s leading AI labs and enterprises to help their models get better at the tasks people actually want them to do. We’ve built a Cloud-Native Agent Dataset Factory which turns the process of generating evaluation and training data from manual, inconsistent, and labor-intensive into something automated, standardized, and scalable. Sepal AI was founded in 2024 by engineers and operators from Vercel and Turing. We went through Y Combinator, raised several million dollars from leading investors, and already count multiple Fortune 500s and top AI research labs as paying customers.
Next to it in Data for AI · AI evaluation and training data generation
- Selectstar, Inc.Plug and Play PnP 2026
SelectStar is a technology company leading AI training data and LLM reliability evaluation, with a mission to improve AI performance and ensure trustworthiness through high-quality data.
- Unitlab AI500 Global 500G Georgia 7
Enterprise Multimodal Data Platform for AI Teams | Unitlab
- Vision LabY Combinator X25
Industrial data layer for robotics training
- LuelY Combinator W26
Turning everyday words and actions into usable training data.
- DatoricY Combinator S26
Secure training data shaped by experimentation
- BesampleTechstars TS 2024
Besample | Research beyond the West
- SenseiY Combinator S24
Robotic Training Data at Scale
- AbundantY Combinator F24
Agent simulation and RL for researchers