OpenAI’s GPT-4 represents a significant milestone in the development of generative artificial intelligence. As a large multimodal model, it is capable of processing both text and image inputs to generate text outputs. GPT-4 exhibits human-level performance on various professional and academic benchmarks, including passing a simulated bar exam in the top 10% of test-takers. Key enhancements include advanced reasoning capabilities, a much larger context window, improved creativity, and robust safety protocols that make it more reliable and aligned than its predecessor, GPT-3.5.