The latest from Sixfold as they build the AI underwriting future;
Sixfold, the AI underwriting Insurtech trusted by global insurers, has raised US$30 million in Series B funding. The round was led by Brewer Lane, with strategic investments from Guidewire and continued participation from existing investors, including Bessemer Venture Partners and Salesforce Ventures.
The funding enables Sixfold to build the ‘AI Underwriter’, an AI brain with agents that autonomously advance end-to-end underwriting to improve speed, consistency, and decision quality for insurers. This leads an industry shift towards underwriters focusing on strategic work, including portfolio performance analysis, testing new appetite strategies, and identifying new market opportunities.
“The underwriting role is being rebuilt from scratch,” said Alex Schmelkin, Founder and CEO of Sixfold. “We’re creating a future where underwriting operations completely run on Sixfold and strategy is run by people. We’re redefining what it means to be an underwriter.”
With this Series B funding, Sixfold will expand its research and engineering teams to advance their AI underwriting technology with autonomous agents, extensive data integration, portfolio visibility, and near-zero time to value. Sixfold will also scale commercial operations to support global expansion and growing customer demand in North America, Europe, Latin America, and Australia.
The new technology will integrate directly into existing tools that underwriters use, such as workbenches and policy administration systems. This will enable fast implementations without requiring underwriters to change their workflows, which has been a key factor for Sixfold’s adoption across major insurers.
“Underwriting remains one of the most critical and complex functions in P&C insurance,” said Jay Grayson, Vice President of Corporate Development and New Ventures at Guidewire. “Sixfold’s approach tackles that complexity and delivers meaningful value to insurance carriers by applying agentic AI to key underwriting processes.”
“There’s a clear split forming in the industry,” said Jane Tran, Co-founder and COO of Sixfold. “To win business, you need speed and selectivity to quote quickly and write profitable risks. To retain talent, you need to give time back to underwriters to focus on strategy. Sixfold delivers both, and that competitive advantage increasingly shows up in combined ratio performance.”
“We did extensive due diligence across the market, talking with customers, prospects, and industry experts,” said John Kim, Founder of Brewer Lane and former Chief Investment Officer of New York Life. “Sixfold’s reputation stood out again and again, specifically around their deep expertise in underwriting. That level of market respect is rare; it speaks to the quality of the product and team they’ve built.”
Sixfold’s existing underwriting AI solutions have already processed over 1 million submissions across more than 40 lines of business for global insurers representing $265 billion in gross written premium, including for Zurich North America, Guardian, Generali GC&C, and Skyward Specialty.
Skyward Specialty deployed Sixfold across 11 underwriting teams and has reduced quote response time by an average of 35%. Zurich North America rolled out the platform to its entire middle market team of more than 200 underwriters, saving up to two hours per submission.
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