Model Evaluation Metrics ➺ Core Matrics: Perplexity scores BLEU/ROUGE metrics Embedding similarity Response latency ➺Technical Implementation: Accuracy Metrics Token prediction accuracy Next sentence prediction Semantic similarity scores Cross-entropy loss ➺ Performance Metrics: Inference time Memory usage Throughput GPU utilization ➺ Statistical Analysis: Confidence intervals Error margins Distribution analysis Outlier detection ➺ Benchmark Suites: GLUE/SuperGLUE HELM benchmarks Custom test sets Industry standards