Large Language Models (LLMs) have gained significant attention since the launch of ChatGPT in 2022, with new models like GPT-4, Gemini, and Grok claiming superior performance. Evaluating these models involves using standardized benchmarks that assess capabilities such as language understanding, reasoning, and programming. Benchmarks like HellaSwag-Pro, MultiChallenge, and Humanity’s Last Exam highlight a model's strengths and weaknesses across different tasks. For instance, HellaSwag-Pro tests reasoning in bilingual contexts, while MultiChallenge evaluates multi-turn conversation abilities, revealing that models often struggle with complex dialogue. Other benchmarks, like U-MATH and CHAMP, focus on mathematical problem-solving, and coding benchmarks such as SWE-Bench Multimodal and BigCodeBench assess programming skills. Evaluation metrics like accuracy, precision, and recall are crucial, and methodologies range from human judgment to automated scoring, including the use of LLMs as evaluators. Despite challenges like benchmark saturation and prompt sensitivity, best practices for benchmarking include defining goals, using multiple benchmarks, standardizing prompts, and incorporating human reviews, ensuring robust evaluation processes.