Best LLM observability tools
Tracing, monitoring, evaluation and prompt management platforms for apps and agents built on large language models.
6 apps, ordered by visits from AppBreakup and how often our research lists each one as an alternative. Open any app to see its alternatives.
All LLM observability tools
- Alternatives to Evidently AI
Open-source Python framework for evaluating, testing and monitoring LLM apps and ML models.
Open sourceSelf-hostableSelf-hosted, Web - Alternatives to Braintrust
Hosted platform for tracing, evaluating and improving LLM apps and AI agents.
Free plan + paidWeb - Alternatives to HoneyHive
Observability and evaluation platform for AI agents running in production.
Free plan + paidWeb, Self-hosted - Alternatives to Galileo
Galileo
AcquiredAI evaluation and observability platform that turns evals into production guardrails, now part of Splunk.
PaidWeb, Self-hosted - Alternatives to Traceloop
Traceloop
AcquiredLLM observability and evaluation platform built on OpenTelemetry and the open-source OpenLLMetry SDK.
Free plan + paidWeb, Self-hosted - Alternatives to Fiddler AI
Enterprise platform for monitoring, evaluating and guarding ML models and AI agents.
Free plan + paidWeb, Self-hosted
Our picks by need
Best for most people
Evidently AIBest for a free option
Evidently AIBest for open source
Evidently AIBest for self-hosting
Evidently AICommon questions
What are the best LLM observability tools?
Based on how often our research lists them as alternatives and visits from AppBreakup, the leading LLM observability tools right now are Evidently AI, Braintrust, HoneyHive, Galileo and Traceloop.
Are there free LLM observability tools?
Yes. Evidently AI (open source), Braintrust (free plan + paid), HoneyHive (free plan + paid), Traceloop (free plan + paid) and Fiddler AI (free plan + paid) have a free option, out of 5 free or freemium apps we track.
Which LLM observability tools are open source?
Evidently AI.