Sarah Guo, one of the world’s top investors, made early and strategic bets on AI startups well before ChatGPT’s mainstream success, notably investing in Base 10 and several other high-value AI companies, demonstrating keen foresight and a hands-on approach. After founding her own AI-focused venture firm, Conviction, in 2022, she has actively supported her portfolio companies, helping secure major investments and earning recognition as a leading figure in AI venture capital.
Sarah Guo, now one of the world’s top investors, made a bold bet on artificial intelligence (AI) well before the mainstream breakthrough of ChatGPT. In 2014, as the youngest partner at Greylock, she met Australian entrepreneur Touheen Shrivastava, who pitched a healthcare startup using machine learning. Although she found the idea generic, she was impressed by the founders. Five years later, Shrivastava returned with a more promising AI-focused startup, Base 10, which aimed to simplify building and running AI applications. Guo invested $1.5 million in the company’s seed round in 2019, confident that AI adoption would soon accelerate.
Base 10 struggled initially, making no revenue for its first four years as AI tools were not widely adopted. However, the market shifted rapidly, and the company’s value skyrocketed to $5 billion, with revenue growing more than tenfold in the past year. It is now reportedly seeking to raise funds at an $11 billion valuation. Guo has consistently invested in every funding round, first through Greylock and later via her own venture capital firm, Conviction, which she launched in 2022. Her stake in Base 10 alone has increased tenfold, reflecting her keen foresight and commitment.
Guo’s success extends beyond Base 10, with significant investments in other AI startups such as legal AI company Harvey, medical AI firm Open Evidence, customer service AI startup Sierra, coding AI company Cognition, and open-source AI developer Mistral. Collectively, these six companies are valued at $62 billion. Guo’s early recognition of AI’s transformative potential challenged traditional venture capital assumptions about markets and company-building, particularly in sectors like robotics, legal, and medical software.
In 2022, Guo took a major career risk by leaving Greylock to found Conviction, an AI-focused early-stage venture capital firm with a $101 million inaugural fund. This move came just one month before ChatGPT’s launch, which dramatically showcased AI’s potential to the public. Guo’s investment strategy contrasts with the common “spray-and-pray” approach; she makes fewer, highly targeted bets and takes active roles in the startups she backs. Over the past three years, she has invested in only 27 startups and taken board seats in six, allowing her to deeply support and influence their growth.
Guo’s hands-on approach has proven invaluable to her portfolio companies. She has gone beyond typical investor roles by personally intervening to retain customers and securing major investments, such as convincing Nvidia to invest $150 million in Base 10. Founders like Shrivastava and Harvey CEO Winston Weinberg credit her with being instrumental to their success, highlighting her deep relationships and early involvement in the AI space. Guo’s prescient bets and dedicated support have earned her a spot on Forbes’ Midas list of top venture capital investors, cementing her reputation as a leading figure in AI investment.