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What Is a White-Label AI Voice Agent? A Guide for Agencies

By Published 2 min read

A white-label AI voice agent is an AI phone agent that runs on another company’s voice technology but is sold, branded and managed under your agency’s name. With Call Supplai, that technology is Retell AI: your clients see your logo and dashboard, while Retell AI handles the conversation.

How does a white-label AI voice agent work?

A white-label AI voice agent works in three layers: a voice engine that runs the conversation, a white-label platform that carries your brand, and your agency, which configures the agents and owns the client relationship.

  1. The voice engine. Retell AI handles speech recognition, the language model conversation, and the voice itself.
  2. The white-label platform. Call Supplai adds the branded layer: your logo, your colors, and a dashboard where your clients see calls, transcripts and sentiment.
  3. Your agency. You configure agents for each client, set their price, and own the client relationship.

Your client never needs to know which voice engine is underneath. They buy “your” AI receptionist.

What can a white-label AI voice agent do for clients?

Agencies using Call Supplai most often sell white-label AI voice agents for four jobs: answering front desks, calling and qualifying sales leads, handling customer support, and taking hospitality bookings.

Use case What the agent handles
Medical front desk Appointment booking, reminders, after-hours calls
Sales agents Speed-to-lead calls, qualification, meeting booking
Customer support Common requests, escalation, call quality insights
Hospitality Reservations, confirmations, guest questions

How much does a white-label AI voice agent cost to run?

Running a white-label AI voice agent on Call Supplai costs two things: $197 per month for the Call Supplai platform, and Retell AI usage, which Retell bills directly to your own account based on call minutes. There is no setup fee on the Agency Plan. See Call Supplai pricing for details and Retell AI’s pricing page for current per-minute rates.

Whatever you charge clients above those two costs is your margin. See Retell AI pricing explained for a worked per-client example.

Why white-label instead of building your own platform?

Building your own client-facing platform on Retell AI means designing, coding and hosting a portal, a branding system and call reporting before you sell your first agent. A white-label platform like Call Supplai gives agencies that layer on day one, so the work goes into winning clients and configuring agents.

Is a white-label AI voice agent secure enough for healthcare?

It depends on the voice engine underneath. Call Supplai is built on Retell AI, which is HIPAA compliant, SOC 2 audited and GDPR compliant. That makes it a fit for medical and dental front desks, although each client practice is still responsible for its own compliance obligations.

How do I start selling white-label AI voice agents?

To start selling white-label AI voice agents with Call Supplai, book a demo. We’ll show you the branded platform, walk through pricing, and help you map out your first client use case.

Frequently asked questions

Do I need my own Retell AI account to use Call Supplai?

Yes. Call Supplai connects to your own Retell AI API key, so Retell bills call usage directly to your Retell account and you keep control of your agents and phone numbers.

Will my clients see Call Supplai's name?

No. Call Supplai is fully white-labeled: the dashboard your clients log into carries your agency's logo and colors, not Call Supplai's.

Is there a setup fee for a white-label AI voice agent platform?

Not with Call Supplai. The Agency Plan is $197 per month with no setup fee. The Enterprise Plan, which includes a custom-built Retell AI agent, is custom-priced.

See your brand on a live AI voice agent

Book a demo call. We walk through the white-label platform, pricing, and how agencies sell it to clients.

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