Y Combinator has introduced Saffron, an AI-driven tool aimed at revolutionizing technical interviews by evaluating engineers' efficiency in real-world scenarios. The tool allows recruiters to create assessments quickly by linking to a GitHub repository or selecting from a question bank. Candidates then complete tasks in an online IDE using real codebases and AI tools, followed by reflection questions. An AI review agent scores submissions, providing metrics like AI dependency and tool usage frequency. Founded by Robert, Jerry, and Kazuma, Saffron is currently offering free setup for early adopters.