Coframe raises $25M Series A as Vinod Khosla bets customized pages are the next iteration of the web
What's the deal? Coframe, a San Francisco startup whose AI generates, tests and personalizes websites, landing pages and ads, has raised a $25 million Series A co-led by Khosla Ventures and Hanabi Capital. The round, announced on 9 November 2026, takes total funding to $35 million. Nat Friedman and Antler also participated, as did leaders at OpenAI, Anthropic and Google DeepMind. The valuation was not disclosed. Khosla Ventures had already led Coframe's $9.3 million seed in 2024.
Khosla's take: A day after the announcement, Vinod Khosla quoted Coframe founder and chief executive Josh Payne and wrote: "Customized pages for every visitor is the future is the next iteration of the web." In the company's release, Khosla said that "for decades, the web has been frozen in place, showing every visitor essentially the same page," and that Coframe is building a "living internet" in which two people can visit the same site and have completely different experiences. "These interfaces continuously learn and improve themselves. This is a huge leap beyond traditional A/B testing and the next iteration of the internet." He told Business Insider: "The world has changed because AI has enabled extreme customization."
What Coframe does: The product plugs into a company's website or advertising campaigns and continuously generates, tests and deploys variations, personalizing what each visitor sees. Coframe says this is powered by a transformer model trained on user interactions and by a set of AI agents covering strategy, design, engineering, QA and data analysis, which can produce hundreds of variations in minutes. Apps and email are next on its roadmap. Co-founder and VP of Engineering Pavlo Razumovskyi said user interfaces "should improve themselves, and be personalized to every user." Coframe also says it is working with OpenAI so customers can optimize a ChatGPT ad and its landing page as one loop.
Company-reported results: Coframe says it has generated more than $300 million in incremental revenue for customers, and that conversion rose 158% at Dropbox, 410% on Replit's enterprise funnel (with demo requests doubling), and 60% at Cash App, a Block product. It says conversion rates have improved by more than 20% on average across a customer base that includes Dropbox, Block, BCG and Sur La Table. Those figures come from Coframe and have not been independently verified.
Context: Payne founded Coframe in 2023 after studying mathematics and computer science at Stanford, and previously co-founded Autograph with Tom Brady.
Sources: Coframe
PR Newswire
Coframe on Replit
Business Insider
Vinod Khosla on X
Josh Payne on X
Image: TechCrunch, via Wikimedia Commons
