Callbook AI
AI collections agency for late stage portfolios
Founders
- Diego AvellanedaFounder/CEO
- Daniel MartinezFounder & Product
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Adjacent
Overlapping tags, a different niche.
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About Callbook AI
Callbook AI is a collections agency operated by AI. We collect late stage portfolios by finding, contacting and negotiating with borrowers.
San Francisco, CA, USA; Remote
Callbook AI: questions
Which YC batch was Callbook AI in?
Callbook AI was in Y Combinator's Summer 2026 batch (S26).
Is Callbook AI still active?
Y Combinator lists Callbook AI as active.
Who founded Callbook AI?
Callbook AI's founders, as listed on its YC page: Diego Avellaneda (Founder/CEO), Daniel Martinez (Founder & Product).
Where is Callbook AI based?
Callbook AI lists San Francisco, CA, USA; Remote as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.