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YCS26ยท AI

Callbook AI

AI collections agency for late stage portfolios

ActiveChecked 20h ago
Batch
S26
Status, per YC
Active
Team size
7
HQ
San Francisco, CA
In S26231 companies, 88% AI
callbook.aiYC profile LinkedIn

Founders

  • Diego AvellanedaFounder/CEO
  • Daniel MartinezFounder & Product

Same space

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.

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