Coframe Raises $35 Million for Self-Optimizing AI Websites

Coframe has raised $35 million in total funding, including a $25 million Series A co-led by Khosla Ventures and Hanabi Capital, to build websites that continuously rewrite and retest themselves. The startup claims its AI agents have generated more than $300 million in incremental revenue for customers including Dropbox, Replit and Cash App — figures the company provided and that no third party has verified.

Founded in 2023 by CEO Josh Payne, Coframe replaces periodic redesigns and manually managed A/B testing with autonomous agents that generate content variations, measure results and refine the next iteration. Reported conversion-rate gains run to 158% at Dropbox, 410% at Replit and 60% at Cash App. Across the wider customer base, which also counts Boston Consulting Group, Block, Backcountry and Sur La Table, Coframe reports average conversion increases above 20%.

What does this change for marketing and growth teams?

The pitch targets teams that run experiment programs constrained by engineering and design capacity. Coframe says customers can raise testing frequency tenfold or more without adding headcount. At Dropbox, an experiment that previously demanded four weeks of engineering, design and QA work was built and deployed in roughly 30 minutes, according to the company. An unnamed Fortune 500 customer reportedly launched dozens of variations and saw a 70% conversion improvement within 30 days of signing.

The platform combines a proprietary transformer model trained on user behavior with specialized agents handling strategy, design, software engineering, quality assurance and data analysis. Coframe says its models analyze user interactions across hundreds of millions of sessions per month. The company reports a 39% experiment win rate across thousands of variations — more than three times what it calls the industry average, though that baseline and all performance figures come from Coframe itself.

"We're building an internet that improves itself," Payne said. "A digital experience should understand what it is trying to accomplish, adapt to the person interacting with it and learn from every result."

Who is backing it?

The round drew participation from executives and researchers associated with OpenAI, Anthropic and Google DeepMind, plus investors Nat Friedman and Antler. Vinod Khosla framed the thesis in one line: "For decades, the web has been frozen in place, showing every visitor essentially the same page." Coframe, he said, is building "the living internet, where two people can visit the same website and have completely different experiences, personalized to who they are and what they need."

Coframe did not disclose its post-round valuation or how it will allocate the capital.

The OpenAI angle

Beyond website optimization, Coframe is preparing for internet traffic driven by autonomous AI agents that research products and complete purchases on behalf of consumers. It is collaborating with OpenAI on the ChatGPT advertising offering, aiming to let advertisers optimize ads and their landing pages as one connected experience. The partnership builds on earlier joint work on a model that generates brand-consistent code and creative assets. Coframe is also adapting its design practices so sites remain legible to AI agents, and its roadmap extends optimization into applications, email and other interfaces.

Payne previously co-founded Autograph, the digital collectibles company launched with Tom Brady that surpassed a $2 billion valuation, and built GPT-Migrate, an early autonomous coding tool. Coframe has acquired companies founded by former Optimizely executives Bo Mohazzabi and Steven Ebin, who now serve as vice president of go-to-market and general manager of revenue optimization, respectively.

The funding lands as businesses accelerate adoption of AI tools across marketing, development and customer engagement, and positions Coframe to compete in a market where the measurable claims — from win rates to revenue lift — will face growing scrutiny as the category matures.