Callab AI YC Application

Spring 2026Active

Callab AI went through Y Combinator in the Spring 2026 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Spring 2026
Industry: B2BOperations
Team size: 7
Status: Active
Launched: 2026

Founders

Haithem KchaouCo-founder/CEO
Chehir DhaouadiFounder

What Callab AI does

58% of the $400B call center industry runs on on-prem phone systems, and until now bringing AI voice automation to them meant ripping out their entire infrastructure first. That's the largest unserved segment in the market. Callab AI connects directly to legacy PBX systems like Avaya, Cisco UCM, and Mitel, and automates up to 70% of call volume with zero migration needed. We plug into these environments without requiring a rip-and-replace. We serve clients across three continents, including brands like Dunkin Donuts.

Callab AI's YC application, reconstructed

Y Combinator application

Callab AI, Spring 2026 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Callab AI

Describe what your company does in 50 characters or less.

AI voice agents for on-prem telephony

What is your company going to make? Please describe your product and what it does or will do.

We build AI voice agents that connect directly to legacy on-prem telephony systems like Avaya, Cisco UCM, and Mitel. Our product automates up to 70% of call volume without requiring clients to replace their existing infrastructure. It's designed for call centers stuck on old phone systems who want AI automation without migration headaches.

Where do you live now, and where would the company be based after YC?

We live in San Francisco, CA, and after YC the company would remain based here.

Explain your decision regarding location.

San Francisco is where we live, and it's the best place to recruit AI and telecom engineering talent. Being here keeps us close to customers and partners in the call center space.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real Callab AI YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Callab AI's public data (launch notes, founder backgrounds, product description). It shows how a company like Callab AI would present itself to YC, not the text they submitted.