State of Play: LLM Observability
An annual review of the LLM Observability market, with answers from the vendors in it.
October 22, 2026
State of Play 2026: LLM Observability
Five makers of LLM tracing, evaluation and testing tools were acquired or agreed to be acquired in 2026, by ClickHouse, OpenAI, ServiceNow, Cisco and Dynatrace. Where the market stands, what each kind of product costs where prices are public, and what a deployment requires.
The evaluation of this market and its vendors is in the Buyer Guide: LLM Observability & Evaluation.