Market landscapes / Observability, Evaluation & Testing
LLM Evaluation & Testing companies
Measuring whether a model or an agent is actually any good, and catching it when that changes. Every team that puts an LLM into production runs into this, and most build something themselves first. At 53 companies it is the largest sub-sector in its theme, and 33 are hiring.
Updated 12 October 2026
53 companies
6 acquired
33 hiring now
The rest of the Observability, Evaluation & Testing landscape
The full map, including the sub-sectors too small to list separately.
The whole Observability, Evaluation & Testing mapLLM & Agent Observability 39Agent Monitoring & Debugging 16
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 LLM Evaluation & Testing, here is how I work. The whole market in numbers.