A profile of Sarah Guo, Greylock's youngest GP before she founded Conviction in 2022, which has since backed six of the 21 AI-native companies now worth $10B+
The investor closest to the AI frontier is betting against the ambitions of its biggest companies
ColossusDom Cooke
Context & Ripple Effects
Conviction’s portfolio record places Sarah Guo’s post-Greylock firm within an AI startup cycle that has produced a growing set of highly valued AI-native companies. It also sits alongside evidence that AI can let startups operate with smaller teams and less hiring capital, as in the rise of AI-enabled “tiny team” startups.
The profile’s contrarian framing matters because the AI market is not moving in one direction: DeepSeek’s challenge to the biggest-model playbook has strengthened the case that venture outcomes may emerge beyond the best-capitalized frontier labs.
First-order effects
The profile gives Conviction a concrete public credential: it has backed six of the 21 AI-native companies cited as worth more than $10 billion, reinforcing Guo’s positioning as a specialist investor after leaving Greylock.
For founders and prospective limited partners, that record makes Conviction’s investment judgment more visible at a time when AI company selection—not simply exposure to the category—is a central differentiator.
Second-order effects
Other venture firms seeking AI allocations face added pressure to show distinctive technical sourcing or a clear thesis, rather than relying on broad AI branding; YC’s heavily AI-focused cohort points to the depth of the competing startup pipeline.
The contrast between highly valued AI-native companies and capital-efficient startup models could widen investor segmentation: some funds will pursue concentrated frontier winners, while others target smaller companies whose AI use reduces early operating needs.
Third-order effects
If specialist funds continue to identify breakout AI companies before they become obvious, venture capital in AI may become more concentrated around investors with technical networks and repeated access to founders, even as company formation broadens.
The durable divide may be less between “AI” and non-AI investing than between capital-intensive model builders and software businesses that can exploit cheaper, improving capabilities; the corpus supports that direction but not a fixed outcome.
The trend: AI venture investing is bifurcating between concentrated bets on potential category leaders and a wider field of lean, AI-enabled startups that can reach traction with less capital.
Sarah Guo is a force of nature! We met when Greylock was doing diligence on Figma for our Series A in 2014. She has been a great friend ever since and it's awesome to see her hard work recognized here. (Especially knowing how uncomfortable a profile like this must have made her!)
And then there's @mvernal, the lower-key half of Conviction. Very few people are excellent at product AND engineering AND business. Mike is that rarest of birds.
Sarah is truly n of 1. In the blink of an eye, she's built a firm that is carrying forward the world's most innovative companies today. And she does it with both fiery vision and humble curiosity. On top of that, she's joined forces with Mike Vernal, who scaled Facebook in
My latest profile, which could have been titled Maxxed Out. What it's like on the frontier of AI with @saranormous and her team at Conviction, who are very much in the thick of it.
Sarah runs Conviction more like a startup than an investment firm. She's more in the operational weeds than typical investors, but has also been very early to many of this generations (so far) defining companies. Maybe the simplest point is: she's at the top of LP's wishlist,
Thank you @domcooke for capturing a glimpse of the passion, intensity, and joy @saranormous brings to everything she does. There is no better investor or human in our business.
I've known @saranormous for over a decade, working with her directly since Baseten's inception. She has shown up in full force for us every single day, in good times and bad. Few investors commit themselves so intensely to the companies they back. Sarah exemplifies that kind of
I know this profile has nothing to do with Sarah's gender (good!!) but it is still insanely inspiring that one of the best investors of this era is a woman.
This profile gets @saranormous exactly right. It's the relentless operational hustle. When we were only 20 people, Sarah flew to LA to run customer calls with us for a full day. She's helped us land key hires. And she follows through on what she says. That's not a typical
One of the biggest advantage founders can have is an investor who consistently shows up. @saranormous made the intro that became our first customer, connected us to the right early hire, and has continually been ahead of everyone on predicting where AI is going. Grateful to be
we gave @colossusmag a look at what @mvernal @pranavreddy @igarciacamargo me & team @conviction are trying to do — find and arm the most extraordinary founders at a moment when technology molds a malleable future feels like a mission! but yes, acting with belief is also a wager
One researcher candidate: “I am more aligned with Sarah on robotics philosophy than with most roboticists.” @saranormous led Sunday's seed round in March 2024. What's striking from day one is how deeply she went into understanding robotics from first principles, instead of
Sarah is so intense and so cool and so committed to her founders. This profile by @domcooke is so fun to read. And as we like to say in startup land, she's just getting started.