Market landscapes / Observability, Evaluation & Testing
Agent Monitoring & Debugging companies
Working out why an agent did what it did. Failure detection and root-cause debugging aimed at agents specifically, rather than at the model underneath them. A newer problem than evaluation, and a harder one, because the thing you are debugging made its own plan.
Updated 12 October 2026
16 companies
1 acquired
11 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 Evaluation & Testing 53LLM & Agent Observability 39
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 Agent Monitoring & Debugging, here is how I work. The whole market in numbers.