Agenta-AI/agenta: Open-Source LLMOps Platform Combining Evals, Prompt Management, and Observability — 3,983 Stars

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Agenta unifies prompt playground, prompt management, LLM evaluation (human + automated), and OTel-compatible observability in one open-source platform. Works with LangChain, LangGraph, PydanticAI, and all major model providers. The UI is accessible to non-developers for trace inspection and annotation. As LLM apps move from prototypes to production, the 'single pane of glass' for evals + observability + prompt management is becoming critical infrastructure rather than nice-to-have.