Callab AI
AI voice agents for on-prem telephony stack.
- Headquarters
- San Francisco, USA
- Work style
- Fully remote
- Team size
- 7 people
- Stage
- Y Combinator Spring 2026
About Callab AI
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.
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Callab AI, quick answers
What does Callab AI do?
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.
Is Callab AI hiring remotely right now?
Not on RemoteWork at the moment. Check back, roles are added daily.
Where is Callab AI headquartered?
Callab AI is headquartered in San Francisco, USA.