Most marketing teams still create landing pages one at a time. Flint, an AI platform backed by Sheryl Sandberg's venture fund, is betting that workflow is about to break.
What it is: Flint ingests a brand's design system from a URL and generates on-brand pages on the customer's domain. The platform builds ad pages, comparison pages, event pages, and account-based pages.
Who built it: Co-founder and CEO Michelle Lim was Warp's first engineer and head of growth, where she watched ChatGPT and other AI tools answer customer questions about the product faster than her team could publish landing pages to address them. Co-founder Max Levenson previously worked for simulation and infrastructure teams at Nuro, an autonomous-vehicle startup.
Who's behind it: Flint raised a $5M seed in October 2025, led by Accel with participation from Sandberg Bernthal Venture Partners and existing investor Neo. Named customers include Cognition, Modal, Glean, Graphite, and Tandem. The platform was recently featured by OpenAI as one of the marketing tools built on its models.
Hands-on: We put Flint through a test with their free trial. First, we entered in our website domain:
The tool spent a few minutes auditing the site, and it surfaced a list of pages it thought were missing: a definition page for "What is AI Marketing," a dedicated FAQ, a few comparison pages, and an industry landing page. We picked two and let it build.
Awhile later, the pages were ready to view in our workspace:
The output used our brand colors and font without any manual setup. Spacing held up across sections. Headers, body copy, and CTAs matched the rest of the site. The copy was a solid first draft, and spacing held up better than other one-shot design tools we've tested.
What we're watching: The shift from websites as static deliverables to websites as systems that keep growing. Flint is one of the clearest examples of where that's headed.