AI is revolutionizing drug discovery, from designing molecules to predicting protein structures, significantly reducing costs and timelines. AI-derived drugs have shown higher success rates in clinical trials, with companies like Exscientia and Insilico Medicine leading the charge. Key AI technologies include machine learning, deep learning, NLP, and generative models, transforming stages from target identification to clinical trials. Challenges include data quality, validation, and integration, but the future promises more personalized medicine and effective treatments.