Sixfold

Sixfold is an underwriting AI company that builds generative artificial intelligence purpose-built for the insurance industry. Rather than applying AI broadly across claims or billing, Sixfold concentrates deliberately on underwriting, the core function whose speed and judgment determine how insurers win and retain business. Its platform is designed to take on the heaviest operational work of submissions so that underwriters can spend their time on risk selection and portfolio strategy.

The company’s flagship capability is its underwriting AI agents, which process incoming submissions at scale and work through the risk analysis that would otherwise consume underwriter hours. Sixfold emphasizes appetite-aligned insights, meaning the system surfaces the information underwriters need to evaluate a risk against the carrier’s own appetite, along with the reasoning behind each recommendation. That focus reflects the company’s stated belief that customers care about accuracy, compliance and understanding why AI made a decision.

Sixfold serves global carriers, managing general agents (MGAs) and reinsurers. According to the company, its platform has processed more than one million submissions across over 40 lines of business. Sixfold reports that its customers move about 50% faster and see gross written premium per underwriter rise by roughly 30%. The company also cites deep underwriter adoption in customer deployments, including a cyber team at Generali Global Corporate & Commercial that reported 90% underwriter adoption and 50% faster turnaround times after bringing Sixfold into its underwriting workflows.

The company was founded in 2023 and is headquartered in New York City. It raised a $15 million Series A round led by Salesforce Ventures with participation from other investors, and later a $30 million round led by Brewer Lane, with strategic participation from Guidewire. Sixfold also partners with other insurance technology providers; its AI capabilities are integrated into Munich Re’s Realytix Zero underwriting workbench, so insurers using that platform can access Sixfold’s appetite-aligned insights and agents directly within their workflow.

Sixfold’s product organization is not limited to pure engineering. The company has hired underwriting specialists, including a Principal Underwriter role that works directly with technical teams to help define how the AI reasons about risk. Partnerships and integrations with established industry platforms, along with participation in insurance events and conferences such as gatherings at Lloyd’s in London and the Association of Home Office Underwriters, are part of how the company stays close to the underwriters it serves.

Sixfold’s published working culture is direct and low-ceremony. Employees are expected to obsess over accuracy, compliance and explainability because the company’s customers do. The team stays deliberately focused on underwriting rather than adjacent insurance functions. Customer feedback is treated as a core input: underwriters say what works and what does not, and Sixfold listens, builds and ships. Employees are trusted to run their own work, without check-ins about check-ins or status meetings about status. The company asks people to be honest, be kind and respect one another’s time.

For compensation and benefits, Sixfold lists competitive salaries, equity for every full-time employee, a 401(k) with employer match, commuter benefits for New York City-based employees, and comprehensive medical, dental and vision insurance along with life and disability coverage. Employees receive parental leave, company holidays, unlimited paid time off and an automatic birthday day off. The company maintains a New York City office with a flexible hybrid schedule, where most people are in the office three to four days a week, and also offers remote roles across the United States and the United Kingdom. An annual company offsite, weekly all-hands meetings, an active Slack community and spontaneous team lunches round out the working environment. Sixfold describes itself as an equal opportunity employer that values the diversity of its workforce and its people’s knowledge.