Curvestone AI has secured $4 million in seed funding, led by MTech Capital, with participation from Boost Capital Partners, D2 Fund, and Portfolio Ventures. The investment marks a significant milestone for the London-based company as it accelerates efforts to bring dependable, end-to-end AI automation to financial services, legal, and insurance teams.
The funding follows a period of strong early performance. Curvestone reached profitability before raising outside capital, recorded seven times revenue growth in the past year, and now processes billions of tokens each quarter across document-intensive workflows. The company aims to address the well-known accuracy gap that arises when multiple AI-powered steps are combined in real operational environments. While many tools excel at single tasks, accuracy often drops sharply in multi-step processes. Curvestone’s platform is designed to prevent this compound error issue by maintaining consistent performance throughout the entire workflow.
The company was founded by brothers Dawid and Sebastian Kotur, who previously led AI automation programs at PwC, Metro Bank, and GKN. Their experience in highly regulated environments shaped the platform’s focus on accuracy, auditability, and operational control. Curvestone is already used by organizations across the legal, mortgage, and wealth management sectors, including Stephenson Harwood, Browne Jacobson, Walker Morris, and Pivotal Growth. Early use cases have demonstrated substantial efficiency improvements, such as reducing multi-hour document review processes to minutes and enabling firms to move from sampling-based oversight to reviewing all cases with consistent outputs.
The new capital will support product development and go-to-market expansion. Curvestone plans to grow its library of validated workflows and deepen integrations with CRMs, document management systems, and industry-specific platforms. The company also intends to advance its long-term goal of building a trusted automation layer that can serve as the foundation for agentic AI in regulated sectors.
KEY QUOTES:
“The financial services industry runs on precision, and approximation is a deal breaker. You can review everything and go broke, or cut corners and hope for the best. AI that actually works changes that equation.”
Dawid Kotur, CEO, Curvestone AI
“Curvestone is solving the hard technical problem of automating complex workflows while achieving high accuracy — and accuracy is paramount in regulated industries. We were also impressed that the founders bootstrapped to profitability before taking any outside funding. Their early traction shows real demand across financial services, legal, and insurance.”
Kevin McLoughlin, Partner, MTech Capital
