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Tools/Observability

Best Observability Tools

32 observability tools compared — reviews, pricing & social mentions

1Helicone
Heliconeusage-based + subscription + freemium + tieredFree tier

AI Gateway & LLM Observability

4.5 (2)5,406Alternatives
2Datadog
Datadogusage-based + subscription + freemium + contract + per-seat + tieredFree tier

See metrics from all of your apps, tools & services in one place with Datadog’s cloud monitoring as a service solution. Try it for free.

4.4 (20)2 /mo
3Arize AI
Arize AIsubscription + tiered

Unified LLM Observability and Agent Evaluation Platform for AI Applications—from development to production.

4.3 (20)9,104Alternatives
4Literal AI
Literal AI
41 /moAlternatives
5HumanLoop
HumanLoopsubscription + tiered

Humanloop is joining Anthropic to accelerate the adoption of AI, safely.

39 /moAlternatives
6PromptLayer
PromptLayersubscription + tieredFree tier

Version, test, and monitor every prompt and agent with robust evals, tracing, and regression sets. Empower domain experts to collaborate in the visual

36 /moAlternatives
7Evidently AI
Evidently AImonitoringsubscription + tiered

Ensure your AI is production-ready. Test LLMs and monitor performance across AI applications, RAG systems, and multi-agent workflows. Built on open-so

35 /mo7,420Alternatives
8WhyLabs
WhyLabsmonitoringtiered
27 /mo2,804Alternatives
9Opik
Opik

Comet lets you track code, experiments, and results on ML projects. It’s fast, simple, and free for open source projects.

16 /mo18,555Alternatives
10Weave
Weavetiered

Track, test, and improve language model apps with W&B Weave

9 /mo1,066Alternatives
11DeepEval
DeepEvalevaluationtiered

DeepEval is the open-source LLM evaluation framework for testing and benchmarking LLM applications.

6 /mo14,993Alternatives
12Log10
Log10tiered

Everest is the agentic AI platform for life science services—turn expertise into compliant workflows you can deploy internally or white-label into new

1 /mo96Alternatives
13Braintrust
Braintrustsubscription + contract + tieredFree tier

Turn production traces into evals, compare prompts and models, and improve quality with every release.

1 /mo12Alternatives
14Dynamo AI
Dynamo AIevaluationtiered

Dynamo AI offers end-to-end AI Performance, Security, and Compliance solutions for delivering Enterprise-grade Generative AI.

1 /moAlternatives
15Galileo
Galileosubscription + freemium + tieredFree tier

Galileo

Alternatives
16Langtrace
Langtracesubscription + freemium + per-seat + tieredFree tier

Transform AI Prototypes into Enterprise-Grade Products

1,189Alternatives
17Agenta
Agentaevaluationsubscription + per-seat + tiered

Agenta is an open-source platform for building robust LLM Application. It provides tools for prompt engineering, evaluation, debugging, and monitoring

Alternatives
18Ragas
Ragasevaluationsubscription + tiered

Ragas is an open source framework for testing and evaluating LLM applications. Ragas provides metrics , synthetic test data generation and workflows f

13,173Alternatives
19Patronus AI
Patronus AIevaluationtiered

Patronus AI develops simulation research and infrastructure to accelerate progress toward human-aligned AGI

Alternatives
20Cleanlab
Cleanlabdata-qualitytiered

Cleanlab helps teams build safer AI agents by preventing incorrect responses from reaching users. Detect and remediate incorrect responses from any AI

11,390Alternatives
21OpenLLMetry
OpenLLMetryfreemium + tieredFree tier

Traceloop turns evals and monitors into a continuous feedback loop - so every release gets better

7,151Alternatives
22Athina AI
Athina AIevaluationsubscription + contract + tiered
Alternatives
23Baserun
Baserun
Alternatives
24Kolena
Kolenaevaluationtiered

Automate due diligence, quarterly lease audits, and contract review.

Alternatives
25Langfuse
Langfusesubscription + tiered

Traces, evals, prompt management and metrics to debug and improve your LLM application.

24,100Alternatives
26LangSmith
LangSmithevaluation

View in LangSmith

Alternatives
27Promptfoo
Promptfooevaluationsubscription + freemium + tieredFree tier

The AI Security Platform that catches vulnerabilities in development. Trusted by 156 of the Fortune 500 and 300,000+ developers worldwide.

18,874
28Comet Opik
Comet Opiktracing
Alternatives
29TruLens
TruLensevaluationtiered

Evaluation and Tracing for AI Agents

3,208Alternatives
30Parea AI
Parea AIevaluationsubscription + tieredFree tier

The experimentation and human annotation platform for AI teams.

Alternatives
31Phoenix
Phoenixsubscription + tiered

Arize Phoenix: Open Source AI Development Platform

9,053Alternatives
32Fiddler AI
Fiddler AImonitoringtieredFree tier

The Fiddler AI Control Plane provides enterprises with visibility, context, and control across the agentic lifecycle with observability, guardrails, a

Alternatives

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