Gemini AI is Google's family of powerful, multimodal large language models designed to understand and process information across text, images, audio, and video. Models like Gemini 3.x offer enhanced reasoning and multimodal understanding, while Gemini Omni Flash focuses on speed and efficiency for conversational and real-time applications. Prompt engineering is the strategic process of designing, refining, and optimizing inputs (prompts) to guide AI models like Gemini toward generating desired, high-quality, and accurate outputs.