kastle-ai
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Company
Founder · Operator · Executive
Rishi Choudhary Is Teaching AI to Pick Up the Phone
A missed call inside Redfin's mortgage marketplace became a company. Now the former product manager is building AI agents for the slow, regulated work that begins after a borrower says hello.
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Ai · Fintech · Saas
Kastle
Kastle is a San Francisco startup building AI voice and messaging agents purpose-built for consumer lending, starting with mortgage servicing. Its agents answer borrower calls, take payments, chase delinquent accounts, qualify loan inquiries and score every interaction against lending regulations like FDCPA, TILA and RESPA. Founded in 2024 by Rishi Choudhary and Nitish Poddar and backed by Y Combinator (S24), Kastle plugs into existing systems of record such as ICE MSP and works with large mortgage servicers, including Carrington Mortgage Services.
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