Design Arena operates the world's largest crowdsourced benchmark for AI-generated design, evaluating how leading AI models perform on real-world design tasks. The platform pits model outputs against one another head-to-head across frontend, image, audio, and video generation, collecting human preference votes through live user interaction. This produces leaderboards that measure the aesthetic quality and 'look and feel' of AI output rather than just functional correctness. The company was founded in 2025 by two Harvard graduates who previously worked at Apple, and went through Y Combinator's Summer 2025 batch.