LLM Evaluation Metrics and Methods: Complete Guide for 2026

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🩺 Summary

You deployed an LLM - how do you actually measure if it works well?

📝 Details

Faithfulness (>0.9), Relevancy (>0.85), Context Precision (>0.8), Hallucination Rate (<5%). Frameworks: RAGAS (7.5K), DeepEval (3.5K).