Kastle was founded by Rishi Choudhary, Nitish Poddar in 2024.

Who are Kastle's investors?

Kastle's investors include Insight Partners, Y Combinator, Commerce Ventures, Emergence Capital Partners, Fifth Wall, Romulus Capital.

How much funding has Kastle raised?

Kastle has disclosed $24M raised across 1 of its 2 known rounds.

Where is Kastle headquartered?

Kastle is headquartered in San Francisco, US.

Kastle

YC S24

San Francisco, US · Founded 2024 · 15 employees · Hiring · 6 known investors

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Kastle builds AI voice agents for consumer lending and loan servicing, automating high-volume phone calls, payments, and borrower inquiries for FDIC-insured banks and mortgage lenders. The platform integrates with existing contact center systems and includes compliance engines pre-trained on lending regulations like FDCPA and RESPA.

Also known as Kastle AI, Inc. · Conversion Pilot

AI & Machine Learning Enterprise Software FintechUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S24)

Kastle was founded in 2024 by Rishi Choudhary and Nitish Poddar.

Rishi Choudhary Co-Founder and CEOPreviously, he was founding product manager at Redfin, where he led the Mortgage Marketplace and Search Experience teams. He holds a BS in Systems Engineering from the University of Illinois at Urbana-Champaign.

Nitish Poddar Co-Founder and CTOHe previously served as a tech lead at Verkada, where he oversaw development of a motion search system, built backend inference infrastructure, and led teams responsible for firmware delivery and incident management products; he holds a Computer Science degree from UIUC.

Rishi Choudhary Nitish PoddarFounder

Rishi CRecruiter

Megan LyonsFounding Recruiter

Abby LinnOps

Alina E.Recruiterformer

Investors · 6

Insight Partnerslisted by Insight PartnersNew York · $120M – $350M

How we know: prnewswire.com · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · funding news · prnewswire.com · open dataset · 5k.vc investor directory · Not right? Tell us

Commerce VenturesreportedSan Francisco · $1M – $5M

How we know: funding news · prnewswire.com · Y Combinator's founder network · Not right? Tell us

Emergence Capital PartnersreportedSan Francisco · $500K – $10M

How we know: Y Combinator's founder network · Not right? Tell us

Fifth WallreportedLos Angeles · $250K – $100M

How we know: prnewswire.com · Not right? Tell us

Romulus CapitalreportedBoston · $250K – $10M

How we know: Y Combinator's founder network · Not right? Tell us

Funding

SEC filings, press & company announcements

$24M disclosed across 1 of 2 rounds · 2025–2026

$24MSeries ASep 2026 · 2 sources
Insight Partners (lead), Commerce Ventures, Fifth Wall, Y Combinator
Source ↗
Undisclosed amountSeed RoundMar 2025
Source ↗

Source: company announcements and press reports — follow each round's link for the claim.

Related companies · 1

Kastle SystemsKastle Systems International is a managed security and workplace safety provider offering physical security solutions integrated with HR, IT, and facilities systems for enterprise clients. The company operates through a family of five security brands including Kastle Systems and Mutual Security Services.

Companies working in the same space as Kastle.

Legal entities · 1

corporate structure

Kastle AI, Inc.

In the news

Kastle - AI servicing for mortgage lendingycombinator.com · Aug 2024

Frequently asked questions

What does Kastle do?: Kastle builds AI voice agents for consumer lending and loan servicing, automating high-volume phone calls, payments, and borrower inquiries for FDIC-insured banks and mortgage lenders. The platform integrates with existing contact center systems and includes compliance engines pre-trained on lending regulations like FDCPA and RESPA.
Who founded Kastle?: Kastle was founded by Rishi Choudhary, Nitish Poddar in 2024.
Who are Kastle's investors?: Kastle's investors include Insight Partners, Y Combinator, Commerce Ventures, Emergence Capital Partners, Fifth Wall, Romulus Capital.
How much funding has Kastle raised?: Kastle has disclosed $24M raised across 1 of its 2 known rounds.
Where is Kastle headquartered?: Kastle is headquartered in San Francisco, US.