Startup profile · funding coverage
Kastle funding, valuation and investors
AI workforce for financial services — agents that execute consumer-lending work across existing bank cores.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Series A
$24M · September 2026
Latest known valuation
Not publicly disclosed
Total disclosed equity funding
$24M
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
private
series a · San Francisco, USA
Investors in latest funding
Lead: Insight Partners
Other: Y Combinator , Commerce Ventures , Fifth Wall
Overview
Kastle builds specialized AI agents for consumer lending operations so banks can add capacity inside legacy systems instead of rip-and-replace migrations. Based in San Francisco and backed by Insight Partners, Y Combinator, Commerce Ventures, and Fifth Wall, the company announced a $24 million Series A on September 17, 2026. The release does not disclose valuation or ARR; transaction volume claims differ slightly between body (>$1.8B) and About (>$2B).
Why Kastle is interesting
Insight Partners led a $24M Series A for agents already processing company-claimed $1.8B–$2B in lending transactions without requiring a core replacement — the rare bank AI story with production throughput, not demos.
Product & use cases
AI workforce platform that deploys agents to complete high-volume lending workflows across the institution’s existing cores, queues, and controls while humans handle judgment-heavy exceptions.
- Consumer lending operations at large banks and lenders
- Hybrid teams: agents for repeatable volume, people for complex cases
- AI adoption without multi-year core banking replacement
Key facts
- Series A (Sep 2026): $24M led by Insight Partners
- YC and Commerce Ventures returning; Fifth Wall joined
- Company: >$1.8B–$2B transactions processed by agents
Funding history (newest first)
Series A
2026-09 $24M- Insight Partners (lead)
- Y Combinator (participant)
- Commerce Ventures (participant)
- Fifth Wall (participant)
Market / IPO context
Editorial / static context — not a live quote.
Related funding articles
Venture Capital Tracker pieces that cover Kastle's financing or category context.
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