Market landscapes / Training Data
Expert Data & RL Environments for Frontier Labs companies
Expert-generated data and reinforcement learning environments, sold almost entirely to the frontier labs. 35 companies and only 2 acquired. It exists because the labs decided data produced by specialists was worth more than more volume scraped from the open internet.
Updated 12 October 2026
35 companies
2 acquired
25 hiring now
The rest of the Training Data landscape
The full map, including the sub-sectors too small to list separately.
The whole Training Data mapData Labelling & Annotation Services 45Training Data Curation & Management 19Synthetic Data Generation 14
I am Ben Jackson. I map this market and I hire the commercial teams inside it: sales, marketing, product and delivery. If you are building a team in Expert Data & RL Environments for Frontier Labs, here is how I work. The whole market in numbers.