Regulated enterprises that already run production models or agents and need one control plane for traces, evaluation, policy, and audit evidence.
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Highest reviewed
Observability & monitoring
Ranked by Overall Score among the Observability & monitoring vendors we have published reviews for. Scores come from the same methodology as each full review. This page is for comparing leaders; browse the subcategory to see the full field.
Engineering teams building long-running AI agents that want open-source tracing and debugging with low posted monthly prices.
AI engineering teams that want LLM tracing, prompt management, and evals with the option to self-host.
Product and engineering teams running AI agents with real users who need to find and fix failures that standard logging misses.
ML and LLM platform teams that need OpenTelemetry-friendly tracing, hallucination and drift monitors, and an eval workflow tied to production traffic.
Startups and product teams shipping AI agents that want one API for model access plus tracing, alerts, and evaluations, with a free plan to start and a team plan at $199 a month.
ML and LLM teams that want open-source evaluation reports with an optional Cloud path for collaboration and scale.
Last updated October 2026 · 7 published reviews in this subcategory