Best AI tools for observability
23 tools in the Evaluation category, filtered to observability.
Braintrust
FeaturedEval, monitor, and improve AI products end-to-end.
LangSmith
LangChain's eval + observability platform.
Helicone
Open-source LLM observability — one-line proxy install.
Arize AI
Enterprise observability and evaluation platform for LLM agents and generative AI applications.
Athina AI
Collaborative LLM evaluation and observability platform for teams shipping AI features to production.
HoneyHive
OpenTelemetry-native observability and evaluation platform for LLM agents in production.
MLflow
Open-source platform for tracking, evaluating, and deploying ML models and LLM applications.
TruLens
Open-source evaluation and tracing framework for LLM apps and agents, built on OpenTelemetry.
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W&B Weave
Production observability, tracing, and evaluation for LLM and agent systems from the Weights & Biases stack.
PromptLayer
Lightweight prompt logging + management for OpenAI/Claude apps.
Langfuse
Open-source LLM observability, prompt management, and evaluation in one platform.
Opik
Open-source LLM observability and evaluation platform for debugging and monitoring AI agents in production.
Arthur
Open-source toolkit for testing, tracing, and monitoring production AI agents.
Fiddler AI
Enterprise AI observability and guardrails platform for monitoring agents, LLMs, and ML models in production.
Maxim AI
End-to-end evaluation, simulation, and observability platform for shipping production-grade AI agents.
Respan (formerly Keywords AI)
LLM engineering platform combining a multi-model gateway with tracing, evals, and prompt management.
LangFast
No-signup LLM playground for testing, comparing, and versioning prompts against your own API keys.
Phoenix
Open-source LLM and agent observability platform with tracing, evals, and experimentation built on OpenTelemetry.
Superwise
Agentic management platform for runtime guardrails, policy enforcement, and observability across LLM agents.
Agenta
Open-source LLMOps platform for prompt engineering, evaluation, and observability in one workspace.
Parea AI
LLM evaluation, observability, and prompt management platform for teams shipping production AI apps.
LangWatch
Simulation-based testing, evaluation, and observability for LLM agents
ModelFuzz
Open-source red-teaming and execution-layer defense for AI agents against prompt injection.