Callbook AI
Callbook AI is a YC Summer 2026 (S26) company. Based in San Francisco, CA, USA; Remote. Team of 7.
About Callbook AI
Summary
Callbook AI runs an AI-powered collections agency for lenders managing late-stage delinquent portfolios. Its AI agents locate borrowers, then contact them across calls, SMS, and email in a single continuous conversation, negotiating repayment plans adapted to each borrower's ability and willingness to pay. The product replaces human collections agents and the manual triage work of segmenting accounts, deciding outreach intensity, and routing edge cases.
Business model
Fee on collections performance, structured as an agency engagement.
Go-to-market
Lenders and credit portfolios are the buyers; Callbook AI engages them directly through a sales conversation, as indicated by the "Let's talk" call to action on the site.
From the Y Combinator listing
AI collections agency for late stage portfolios
Callbook AI is a collections agency operated by AI. We collect late stage portfolios by finding, contacting and negotiating with borrowers.
Facts
- B2B / B2B
- San Francisco, CA, USA; Remote
- 7
- Active
- Early
Founders (2)
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