No licence fee.
No cut of what you bill.
Resell voice AI under your own brand and pay one flat rate per minute of voice, with the premium model included and your own carrier underneath. Nothing monthly before you have signed a client, and nothing taken off the top once you have.
- No platform fee
- No white-label add-on
- No revenue share
- Premium model included
Your margin is your price minus one number.
Voice AI for agencies means reselling phone agents to your own clients under your own brand. With Nixflex you build one agent template per offer, attach a number per client over the API, and pay a flat $0.08 per minute of voice with no platform fee, white-label surcharge or revenue share, so the difference between that and your retainer is your margin.
RUN YOUR OWN NUMBERS
What does the voice line actually earn?
Other vendors will quote you a margin figure. We would rather you worked it out yourself, with your retainer and your clients call volume, against our real rate.
Nixflex engine only. Carrier minutes are billed separately by your own carrier at your rates, and this does not count your setup or account-management time.
HOW IT WORKS
How does one person run twenty clients?
Build one agent per offer
A receptionist, an after-hours line, a lead qualifier. You configure the behaviour once as a template rather than rebuilding it for every client you sign.
Add a number per client
One API call attaches a client number to the template, isolated with its own call history and settings. Onboarding is minutes, which is what makes a twenty-client roster manageable by one person.
Bill what you like
You charge a retainer or a per-minute rate of your own choosing. Your cost is a flat rate per minute with nothing else attached, so what is left over is genuinely yours.
TWO WAYS TO ADD VOICE TO YOUR STACK
Assemble it, or resell it
- Pick a voice stack and a telephony provider
- Build the multi-client layer so accounts stay separate
- Add branding so clients never see the vendor
- Work out billing per client by hand
- Maintain all of it while selling
- Write one agent template per offer
- Attach a client number with one API call
- Provider is invisible by default
- One flat rate per minute to price against
- Spend the week selling instead
WHAT AGENCIES ACTUALLY SELL
Five offers you can package today
| Offer | What the agent does | Who buys it |
|---|---|---|
Reception | Answers, routes, takes messages, books | Clinics, salons, trades, lettings |
After hours | Covers evenings and weekends properly | Anyone losing calls out of hours |
Lead qualifier | Screens inbound enquiries and books the good ones | Home services, legal, property |
Missed-call recovery | Rings back automatically and saves the enquiry | Any client with a busy phone |
Outbound follow-up | Confirmations, reminders, reactivation calls | Clinics, gyms, dealerships |
Each of these is one agent template. The client-specific parts are the prompt, the number and the calendar.
WHY THE MODEL WORKS
What makes this resellable
One number to price against
A licence fee plus usage plus a white-label surcharge plus a revenue share is four moving parts, and it is why agency margins get vague. When your cost is a flat rate per minute, you can quote a client price in your head and know exactly what is left.
Nothing to pay before you sell anything
Most reseller platforms bill a monthly licence from the day you sign up, which is a bet on a pipeline you have not built yet. Paying only for minutes means client one is profitable rather than a step towards covering a subscription.
A number per client
Isolated call history and settings, provisioned in one request.
Listen to a live call
Useful the week a nervous client goes live.
Reports you can send
Calls, outcomes and sentiment per client, monthly.
The numbers stay yours
In your carrier account, so leaving is a webhook change.
THE PART OTHER PAGES SKIP
The platform is the cheap bit. Delivery is the work.
Voice minutes are not what makes an agency retainer hard. Writing a prompt that matches how a client actually talks to customers, listening to the first week of calls, and fixing the three things that sound wrong is the work, and no vendor removes it. What a platform can do is stop charging you for the privilege and stop making onboarding a build. Anybody promising that reselling voice AI is passive income has not done it.
QUESTIONS
Agency questions, answered
What does it cost an agency to start?+
Nothing until a call happens. There is no platform fee, no white-label add-on and no revenue share, which matters most in the months when you have two or three clients rather than twenty. You pay a flat $0.08 per minute of voice and bring your own carrier for the telephony.
How is that different from other reseller platforms?+
Most charge a monthly licence before you have signed anybody, and several list white-labelling as a separate line on top of that. Some also take a share of what you bill your clients. Our version is one number per minute, so your margin is your price minus a rate you can quote from memory.
Do my clients see Nixflex anywhere?+
No. The agent answers in your client company name, the numbers sit in your own carrier account, and the call data comes to you. What your client experiences is a service from you, which is the whole point of reselling rather than referring.
How many clients can one agent template serve?+
Hundreds. The template holds the shared behaviour and each client gets their own number attached to it, so signing a new client is a provisioning call rather than a build. That is the difference between a service you can scale and one that eats a day per account.
Can each client have their own script and calendar?+
Yes. Settings and integrations are per number, so each client has their own opening line, their own booking calendar and their own webhook while sharing the template underneath. Shared where it saves you time, separate where the client would notice.
What if a client leaves?+
You keep the numbers, because they are in your carrier account rather than ours. Detach the number from the template and that is the end of it. Nothing about leaving costs you a migration, which is also true if you decide to leave us.
What should I charge?+
That is your call and it depends on what you are delivering around the agent. The calculator on this page uses your own numbers rather than ours, and we deliberately do not quote a margin figure, because the honest answer is that it depends on your retainer and your clients call volume.
Do I need developers on staff?+
Not for the standard offers. Prompts, numbers, calendars and transfers are configuration. You want a developer when a client needs the agent to read from their own systems, and at that point it is one function pointed at an API.
Sign your first client this month.
No licence to buy first. Build the agent, attach a number, and bill what you like.
Last updated August 2026