Flint, a company developing technology for fully autonomous websites, announced $5 million in seed funding led by Accel, with participation from Sheryl Sandberg’s fund, Sandberg Bernthal Venture Partners, and returning investor Neo. Founded by former leaders of Warp and Nuro, Flint aims to redefine the role of websites in the AI era by enabling them to self-generate, self-optimize, and respond dynamically to user and market activity.
The company’s core product enables websites to function as intelligent, adaptive agents, rather than static collections of pages. Flint’s platform can automatically generate new pages, A/B test layouts, and modify content in real time while maintaining brand control. The technology is designed for a world increasingly dominated by AI-driven browsing, where systems like ChatGPT and other agents explore and interpret websites on behalf of users.
Flint’s concept envisions websites that autonomously detect competitor launches, produce comparison pages instantly, and tailor content dynamically for specific visitors—such as emphasizing healthcare case studies when a healthcare executive arrives, or communicating directly with AI agents through specialized protocols. The company believes this shift represents the next evolution of digital presence, moving from static design to autonomous operation.
Flint’s platform is already in use by several AI-forward companies, including Cognition, Modal, and Graphite. Early adopters have used Flint to create dynamic comparison and landing pages, achieving measurable outcomes such as leading SEO and AI-SEO rankings, 50% higher Google Ads conversions, and accelerated pipeline growth. Customers upload a content brief and provide their existing URL; Flint then analyzes their design system and delivers fully coded, brand-aligned pages that deploy directly on their primary domain.
The company’s founding team brings together expertise from AI infrastructure and autonomous systems. CEO and Co-founder Michelle Lim was previously the first engineer and head of growth at Sequoia-backed Warp, where she experienced firsthand the bottlenecks of traditional web development. CTO and Co-founder Max Levenson, formerly of Nuro, applied principles from autonomous vehicle simulation—processing live data streams, decision-making, and rapid adaptation—to build the foundation for Flint’s self-operating websites.
How the funding will be used: The newly raised funding will accelerate hiring across design and applied AI engineering as Flint scales its invite-only beta program. Despite limited public availability, the company has already built a significant waitlist of enterprise customers seeking AI-driven marketing and content automation.
KEY QUOTES:
“It’s time to kill the traditional website. We’re moving from a world of websites as static assets to one where they’re autonomous agents.”
“Your website is either autonomous or obsolete.”
Michelle Lim, Co-founder and CEO, Flint
“The web is being disrupted by AI and companies need to adapt their websites quickly. Flint is solving this challenge, shaping discoverability and online advertising for the AI era.”
Sheryl Sandberg, Co-founder, Sandberg Bernthal Venture Partners
“Marketers are gravely underserved by outdated tools. Flint finally gives them AI superpowers to compete.”
Dan Levine, Partner, Accel
“We’ve known Michelle as an outlier since 2019, and the whole Flint team is cracked. I’d bet on this team in a heartbeat.”
Ali Partovi, Founder and CEO, Neo
