5 Search companies in San Francisco.
By the Numbers
Exa
San Francisco
Exa, a San Francisco-based startup, is building a next-generation AI search engine aimed at outperforming Google for power users, with an about 20-person team including alumni from Harvard, MIT, Apple, and Palantir, and a Series A from Ligh
Phind
Phind reinvents AI search with rich, interactive answers. Based in San Francisco with a small team, led by co-founder and CEO Michael Royzen, a UT Austin Turing Scholar ’22 with prior NLP and ML roles at Lyft, Cloudflare and Microsoft.
OpenFunnel
OpenFunnel is a time-aware search engine for GTM teams that surfaces insights from time-based signals, delivering daily actionable findings. Trusted by over 1,000 users (including Central, Mintlify, and Everest Systems), it reveals pain poi
ZeroEntropy
ZeroEntropy is a B2B software and services infrastructure company focused on AI-driven information retrieval over complex unstructured data. With a two-person founding team and Y Combinator Winter 2025 participation, it combines mathematics
Social Radar
Social Radar is a San Francisco-based B2B software and services company with a three-person team, founded by Rohan Arora and Venkat Krishnan. It bills itself as the best way to search for posts, people, and comments across channels.
