Best Alternatives to Weights & Biases Weave

AgentOps review: developer observability for tracing, replaying, debugging, securing, and monitoring AI-agent sessions, tool calls, token use, and cost.

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Arize Phoenix is an open-source AI observability and evaluation platform for tracing, testing, and improving LLM applications and agents.

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LLM monitoring and gateway platform for AI applications

An open-source observability and evaluation platform for language-model applications.

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LangSmith is LangChain's commercial observability, evaluation and prompt management platform for LLM apps and agents in production.

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Latitude AI observability review covering agent traces, issue detection, human-aligned evaluations, verified pricing, integrations, benefits, and limitations.

Open-source AI agent engineering platform for tracing, evaluating, and debugging agent runs across any framework and LLM provider.

An observability platform and open-source instrumentation toolkit for tracing language-model applications and agents using OpenTelemetry-compatible conventions.

Observability platform for applications and AI systems that gives operational context to engineering agents.

An OpenTelemetry-native observability product for tracing agents, tool calls, and model requests while measuring quality, latency, token use, and cost.