Callab AI logo

Callab AI

AI voice agents for on-prem telephony stack.

Spring 2026B2B / B2B -> OperationsSan Francisco, CA, USA7 employees

About

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.

Build your own investing agent

GPAgent keeps YC listings public and neutral. Fund-specific scoring, notes, and workflow state live in each customer workspace.

Join the GPAgent waitlist

Founders (2)

Chehir Dhaouadi
Founder
Haithem Kchaou
Co-founder/CEO

Details

Status
Active
Stage
Early
Team Size
7
Regions
United States of America, America / Canada, Remote, Partly Remote