Kastle Raises $24 Million Series A to Deploy AI Agents in Consumer Lending
Kastle Raises $24 Million Series A to Deploy AI Agents in Consumer Lending #
San Francisco-based Kastle has closed a $24 million Series A round to expand its AI agent platform for banks and consumer lenders, the company announced September 17. Insight Partners led the investment, with existing backers Y Combinator and Commerce Ventures participating. Real estate technology investor Fifth Wall and a group of founders and financial services executives also joined as new investors.
Kastle’s platform lets financial institutions add AI capabilities without replacing their core systems. Rather than requiring a multi-year infrastructure overhaul, the company deploys specialized AI agents that handle high-volume, repetitive operational workflows, such as loan processing tasks, within the software environments institutions already use. The company says its agents have processed more than $1.8 billion in transactions to date.
Co-founder and CEO Rishi Choudhary described the problem his company addresses as a false choice banks have long faced. “For years, enterprises have effectively been presented with a false choice: accept the limitations of legacy operations or endure a long and risky replacement of the systems at the heart of their business,” he said. Kastle’s approach is to deploy AI on top of existing infrastructure rather than replacing it.
Consumer lending is the company’s beachhead market. Lenders must route time-sensitive workflows across fragmented legacy platforms while staying within service, risk, and regulatory limits, a combination that creates demand for automation but has historically complicated technology adoption. Kastle says its agents are built for that environment. They include financial services-specific context and operate within institutional compliance controls.
Insight Partners Managing Director Rebecca Liu-Doyle said the firm was drawn to Kastle’s focus on completing work reliably within regulatory guardrails, rather than simply augmenting employees with AI assistants. Insight Partners had more than $90 billion in regulatory assets under management as of end-2025 and has backed more than 900 companies globally.
Kastle said the new capital will fund growth in its engineering, product, and go-to-market teams, expand platform capabilities, and speed up deployments with banks and other financial institutions across North America. The company expects lenders to increasingly operate with hybrid workforces that pair human employees with AI agents, with humans handling complex cases that require judgment, expertise, and client relationships.
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