AI Tech Stack · Market Landscape
Observability, Evaluation & Testing
A live map of the companies making AI systems measurable, the observability, evaluation and testing layer.
90
Companies
8
Sub-sectors
$2bn
Total capital
~$2bn
Venture funding
75%
US-based
The newest money in the stack: 72% of companies are at Seed or Series A on a median round of just $5m, and total venture funding is only $1.9bn. Evaluating and testing models (35) is outpacing runtime observability (29), as the field races to answer a question that barely existed two years ago: how do you know an AI system is working?
Companies shown by their primary sub-sector. Funding figures are venture rounds only, sourced from Crunchbase; acquired companies are marked and excluded from the aggregate stats. Logos via logo.dev.