Voice agents that answer like people.
We design, build and run AI voice agents that answer your phone, qualify callers, book appointments and update your CRM — on your own Retell, Vapi, ElevenLabs or Twilio accounts, so you own the numbers, the recordings and the data. We run the same stack ourselves in production across 60+ countries.
- Inbound answering, outbound campaigns or both
- Books straight into your calendar and CRM
- Runs on your own provider accounts — you own the data
- Warm transfer to a human on intent or request
- Call recording, transcript and outcome logging
- Multi-language, with accent and voice selection
What we build.
Everything AI Voice Agent Development includes — designed, built and shipped for you.
We build on your Retell, Vapi, ElevenLabs or Twilio account — not ours. Your numbers, your minutes, your recordings, your billing. If you ever part ways with us, nothing switches off.
Streaming speech-to-speech tuned so the caller never hears the pause that gives an agent away.
The agent asks your qualifying questions and writes a confirmed booking into your calendar.
Outcomes flow into HubSpot, GoHighLevel, Salesforce or your own system via n8n, Make or a direct API — so the call actually changes something downstream.
Warm transfer on intent, sentiment or an explicit ask, with the transcript passed to the human.
Prompt tuning, failure review and monthly reporting on a managed plan, or we hand over the keys.
How we work.
Discover
We learn your process and define a clear, fixed scope.
Architect
A solution design, data model and timeline you approve.
Build
Iterative delivery with demos at every milestone.
Scale
Launch, monitor, and evolve the product with you.
AI Voice Agent Development by the numbers.
We design, build and run AI voice agents that answer your phone, qualify callers, book appointments and update your CRM — on your own Retell, Vapi, ElevenLabs or Twilio accounts, so you own the numbers, the recordings and the data. We run the same stack ourselves in production across 60+ countries.
Scale Us vs the alternatives.
An honest look at building AI Voice Agent Development with us versus the usual options.
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Scale Us
recommended |
Freelancers
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Big agencies
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|---|---|---|---|
| Fixed scope & quote | |||
| You own the code & IP | |||
| Senior, in-house team | |||
| Products + services in one | |||
| Support after launch | |||
| Transparent pricing |
More under Custom Software.
Questions answered.
Still unsure? Email contact@scaleus.in — a real human replies inside 4 hours.
How long does an AI voice agent take to build?
A single-purpose inbound or outbound agent is typically live in about two weeks — discovery and script in week one, build, test calls and tuning in week two. Multi-location or deeply integrated agents take four to six weeks.
Do we need our own Retell or Vapi account?
Yes, and that is deliberate. We build on your provider account so you own the phone numbers, recordings, transcripts and billing relationship. It costs you nothing extra and it means you are never locked to us.
Can the agent transfer to a real person?
Yes. We set warm-transfer rules on intent, sentiment or an explicit request, and the human receives the live transcript so the caller never repeats themselves.
How much does this cost?
Most single-scope builds land between $2,500 and $4,000 as a fixed price. Multi-location or heavily integrated work runs $10,000 to $25,000, and a full platform build is $25,000 to $50,000. Once live, managed support is $900 to $1,500 a month. We quote fixed scope so you are not exposed to an open-ended hourly meter.
Who actually does the work?
Our own engineers, not a subcontracted chain. The team has delivered production apps as a Tier 1 delivery partner to a $1.3B-valuation UK app platform serving US and UK SMBs, plus our own products running in 60+ countries. You get named engineers and a direct line to them.
Let’s build
something great.
Tell us what you need — a real human replies within 4 hours. We work with teams worldwide.
