By Shreya Biswas
Publication Date: 2026-10-29 19:35:00
That unexpected curiosity helped put Perplexity on the map and gave co-founder Aravind Srinivas an early reason to believe the product could work. The company had started with a different idea: making Twitter easier to search. The response to that experiment eventually pushed the team toward a broader web-search product.
During a conversation with Lex Fridman, Srinivas explained how the early tool attracted attention and why the founders decided to build on what they had learned.
Perplexity’s first experiment focused on Twitter
When Srinivas joined forces with co-founders Dennis and Johnny, the goal was to build useful products with large language models. At the time, the team was still exploring where AI could create the most value for users.
One early project focused on Twitter’s social graph. The team collected tweets through academic API accounts and built a search experience that let people ask questions about the platform’s data.
Users could explore conversations, look for tweets about artificial intelligence and identify connections between people through mutual followers. The system also used language models to turn natural language questions into SQL…


