Callab AI is a cloud platform that brings modern AI voice agents to enterprises still running legacy on-premises telephony like Cisco UCM, Avaya, and Mitel. Instead of forcing organizations to rip and replace expensive PBX or SBC infrastructure, Callab connects directly over SIP and deploys production voice agents in roughly one week, opening the largest unserved slice of the 400 billion dollar call center market: the 58 percent of operations still bound to on-prem stacks.
The platform automates up to 70 percent of inbound call volume across routing, appointment scheduling, order taking, and tier one customer inquiries. A semantic knowledge base ingests internal documents, while post-call analysis records, transcribes, and tags conversations with sentiment and confidence scores. Live human supervision allows agents to monitor calls in real time and take over with one click, and CRM integrations push extracted data bidirectionally into the systems contact centers already rely on.
Founded in 2024 by Haithem Kchaou and Chehir Dhaouadi, who together bring nearly two decades of enterprise telephony and applied AI experience, Callab AI is based in San Francisco and backed by Y Combinator in the Spring 2026 batch. Early customers span hospitality, logistics, retail chains, and property management, with healthcare and financial services targeted once HIPAA and SOC 2 Type II certifications are finalized.