{"slug":"ai-eval-observability","title":"AI Eval & Observability","tagline":"LangSmith, Arize, Langfuse, Braintrust: shipping agents to production needs eval + tracing.","hub_url":"/topic/ai-eval-observability","counts":{"companies":4,"business_signals_90d":0,"talent_signals":0},"companies":[{"slug":"langchain","name":"LangChain","primary_layer":"L7","description":"Agent/LLM orchestration framework (LangChain, LangGraph) + LangSmith eval/observability.","profile_url":"/companies/langchain"},{"slug":"langfuse","name":"Langfuse","primary_layer":"L7","description":"Open-source LLM engineering platform — tracing, evals, prompt management.","profile_url":"/companies/langfuse"},{"slug":"braintrust","name":"Braintrust","primary_layer":"L7","description":"LLM eval + observability platform for AI product teams.","profile_url":"/companies/braintrust"},{"slug":"arize","name":"Arize AI","primary_layer":"L7","description":"ML/LLM observability + evaluation platform (Phoenix open-source tracing).","profile_url":"/companies/arize"}],"generated_at":"2026-06-14T04:05:31.837Z"}