Denis Yarats is the Co-founder and Chief Technology Officer of Perplexity. Denis co-founded Perplexity in 2022 to build accurate AI and power the world’s curiosity. Under his leadership Perplexity developed the world’s first AI answer engine, Perplexity, fully AI-native browser, Comet, and the first secure server-based AI orchestration system, Perplexity Computer. Prior to Perplexity, Denis served as an AI researcher at Meta and worked machine learning at Quora. He holds a PhD in Computer Science from NYU, and you can find him on Twitter/X and LinkedIn.