Hebbia is a New York-based enterprise AI company that builds Matrix, an agentic platform for analyzing huge volumes of documents. Instead of a single chatbot guessing at an answer, Matrix dispatches a swarm of AI agents across thousands of files - PDFs, spreadsheets, presentations, emails - and returns structured, fully cited answers in a grid. It is used by asset managers, investment banks, law firms and Fortune 100 companies to compress work that took analysts days into minutes. Founded in 2020 by Stanford PhD dropout George Sivulka, Hebbia raised a $130M Series B led by Andreessen Horowitz in 2024 at a reported $700M valuation.
George Sivulka is the founder and CEO of Hebbia, the AI platform that turns piles of unstructured documents into answers for asset managers, banks, and law firms. He cold-called NASA as a teenager, finished a Stanford math degree in 2.5 years, then walked away from a fully funded PhD to build software that lets AI agents do the multi-step grunt work of professional analysis. By 2024 Hebbia had raised $130M at a $700M valuation on $13M of profitable revenue, with Peter Thiel, Andreessen Horowitz, Index Ventures, and Google Ventures behind it.
Alex Immerman is a General Partner on the Growth investing team at Andreessen Horowitz (a16z), where he leads growth-stage investments across AI, consumer, fintech, crypto, and the physical world. Promoted to GP in January 2026 after seven years with the firm, he has spearheaded investments in category-defining companies including ElevenLabs, EliseAI, Flock Safety, Hebbia, Kalshi, Revolut, Sardine, Stripe, and Waymo. Before a16z, Immerman worked at General Atlantic as a growth-stage investor, served as Chief of Staff for the CFO of Facebook and CEO of Gainsight, and was an investment banker at Allen & Co. He graduated summa cum laude from Wharton and earned his MBA with distinction from Harvard Business School.
Karina Baze (El-Baze) is an Operating Partner at Khosla Ventures, one of Silicon Valley's most storied venture capital firms, where she works at the intersection of cutting-edge technology and commercial reality. A Stanford-trained operator with a career arc running from MuleSoft's scrappy East Division founding days through IPO and Salesforce acquisition, to leading GTM at AI-native companies Instabase and Hebbia, Karina brings rare depth to helping portfolio founders build revenue engines that actually work. Recognized as one of 100 Women in AI in 2025, she specializes in translating deep tech into customer outcomes - a skill set that is quietly reshaping how Khosla's portfolio companies go to market.