Companies

Callab AI

callab.ai

Callab AI provides AI voice agents that automate calls on legacy enterprise telephony systems without requiring cloud migration.

HQSan Francisco, California, United States
Employees1-50
1 active role
Jobs checked 16h ago
AI / MLAI Agent / AutomationB2B SaaS

About

Callab AI builds cloud-based AI voice agents for enterprise contact centers, especially organizations still operating legacy on-premises PBX systems. Its differentiator is a carrier-grade telephony integration layer that connects with existing infrastructure without requiring migration or rip-and-replace, enabling rapid deployment and automation of inbound calls.

Market

Callab AI competes in the enterprise contact-center automation and AI voice-agent market, addressing the large segment of call centers that still use on-premises phone systems. Its positioning is differentiated by connecting directly to legacy PBXs through SIP rather than requiring a cloud-telephony migration or rip-and-replace project. Compared with broader enterprise voice-AI and contact-center platforms such as Cognigy, Kore.ai, PolyAI, Talkdesk, and Retell AI, Callab emphasizes infrastructure compatibility, rapid deployment, and automation of existing inbound call volume.

Target Customers

Callab AI targets enterprise contact centers and large organizations that operate legacy or on-premises PBX systems, especially in hospitality, logistics, retail chains, restaurants, and property management. Likely buyers include contact-center, telecom/IT, and enterprise operations leaders seeking automation without replacing existing phone infrastructure.

At a Glance

Problem

Callab AI addresses the slow, expensive, and rigid handling of routine business phone calls. Traditional IVR menus often force customers through scripted branches, while human support teams spend time answering repetitive questions, routing calls, scheduling appointments, and qualifying leads. The company’s stated value proposition is faster, more consistent responses while allowing human staff to focus on cases that require judgment; its public material does not quantify the resulting savings.

The clearest use case is an enterprise contact center or support operation receiving high volumes of routine inbound calls. Callab also targets outbound workflows such as lead qualification and debt-collection reminders, where the volume and repetitive nature of conversations make automation particularly valuable.

Product / Service

Callab AI provides customizable AI voice agents that handle inbound and outbound conversations, answer questions, schedule appointments, qualify leads, and transfer complex cases to human staff. Its agents can use uploaded manuals, policies, pricing sheets, or internal knowledge bases during live calls, while post-call recording, transcription, and sentiment tagging provide operational visibility. The platform can also connect to APIs and update CRM or other business systems.

Its principal differentiation is deployment into an existing telephony environment rather than requiring a phone-system migration. Callab connects to on-premises, hybrid, or cloud PBX infrastructure as a SIP endpoint, supports live human supervision, and describes a rollout process involving a controlled pilot followed by scaling. Public software listings describe subscription pricing beginning at $240 per month, with a free trial, while higher tiers add SIP trunking and additional knowledge bases.

Market

Callab competes in enterprise conversational AI, AI voice agents, and contact-center automation. Its competitive set includes Dialpad, Decagon, and Observe.AI, while the broader market includes generic voice-agent platforms and established contact-center AI vendors. Callab positions itself around SIP-native integration, natural multi-turn conversations, live escalation, and support for complex call handling rather than only post-call analysis or basic scripted flows.

The company appears early-stage rather than a scaled incumbent. Its website presents customer testimonials and a live product and pricing proposition, but public directories show no user reviews or quantified customer, revenue, or deployment figures; a Tracxn profile classifies the company as seed-stage. Accordingly, Callab has evidence of commercialization and early customer validation, but its revenue status and scale remain undisclosed, so it should not be labeled definitively pre-revenue.

Founders & Leadership

Haithem KchaouFounder
Co-founder/CEO
Chehir DhaouadiFounder
Founder

Funding History

2026-04
Seed$500K

Y Combinator

Active Roles

1
Remote/Sales/32d ago

Business Model

Callab AI appears to make money by selling access to its cloud-based AI voice platform and associated telephony integration to enterprise contact centers. The available evidence does not disclose specific pricing, billing cadence, or other revenue streams.

Products

AI voice-agent platform for legacy and on-premises telephonyInbound contact-center automation for call routing, appointment scheduling, order status, and customer inquiriesSIP-based telephony integration layer that connects AI agents to existing PBX infrastructure

Customers

Dunkin Donuts

Tech Stack

AI voice agents and conversational call automationSIP and SIP-trunk telephony integrationConnectivity to legacy PBX systems including Avaya, Cisco UCM, and MitelOn-premises, hybrid, and cloud telephony infrastructureCRM integration with call routing, data extraction, call transfer, feedback collection, and knowledge-base capabilities

Competitors

Nextiva
Retell AI
Talkdesk
Cognigy
Kore.ai
PolyAI