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Backers
1
Y Combinator
Momentum
0/100
no fresh signals
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Jun 2026
Went through Y Combinator
Tractionpublic signals, read monthly
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News
Startup de cobranzas Callbook AI fue seleccionada por Y Combinator este año
El paso por la aceleradora busca facilitar el acceso a redes globales para escalar su infraestructura hacia operaciones de mayor volumen
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Report
Esta startup colombiana usa inteligencia artificial para entender a los deudores
Una startup colombiana cree que existe una forma más efectiva de recuperar cartera. Su apuesta consiste en utilizar inteligencia artificial...
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How we cut AI call costs by 60% with TinyML
The technical story of how Callbook AI reduced automated calling costs by detecting voicemail locally with a TinyML model.
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The most effective opening for cold calls
Results from a Callbook AI experiment with 500 calls and five opening lines to identify which greeting retained attention best.
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3 lessons from one million AI calls
Three operational lessons from more than one million AI calls across contact strategy, contextual transfers, and segmentation.
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How to make AI calls feel more human
Practical principles for designing AI voice conversations that feel clear, natural, and useful.
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Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
San Francisco
United States
HQ