Custom Voice Agents
A phone agent that sounds like your business and does the work, not just the talking.
We build inbound and outbound voice agents for the calls your team makes and takes every day: booking, qualifying, collections, reminders, check-ins, intake. Built on your scripts, connected to your systems, escalating to humans on your rules.
At a glance
- From $8,000 fixed fee
- 4 to 6 weeks to production
- Retell AI, Twilio, or Vapi
- Any system with an API
- 30 days of tuning included
What you get
Everything a production voice agent needs
Conversation design
Scripts written with your team, tested against real call recordings, tuned for how your callers actually talk.
System actions
The agent reads and writes your data mid-call: availability, account status, order lookups, bookings, tickets.
Escalation rules
Warm transfer, SMS to on-call, or callback queue. Triggered by keywords, sentiment, or anything the agent cannot resolve.
Numbers and telephony
New local or toll-free numbers, porting, forwarding rules, business-hours routing, voicemail fallback.
Logging and QA
Transcripts, summaries, outcomes, and recordings in a dashboard you can filter. Weekly QA samples during tuning.
Compliance
Recording disclosures, consent flows, PII handling, BAA for healthcare, TCPA-aware outbound scheduling.
Process
From first call to production in four to six weeks
1. Discovery
Listen to 20 real calls with you, map the outcomes, agree on what the agent must do and must never do.
2. Design and build
Scripts, system actions, and escalation rules. Weekly demo on a test number.
3. Pilot
Live on overflow or after-hours for two weeks. We review every transcript and tune daily.
4. Launch and tune
Full traffic, 30 days of included tuning, handover documentation, optional retainer.
Timeline and price
Fixed fee, quoted after discovery
Voice minutes and phone numbers are billed by the telephony provider at cost. We do not mark them up.
| Scope | Typical timeline | Price |
|---|---|---|
| Single-purpose agent (one call type, one integration) | 4 weeks | From $8,000 |
| Multi-flow agent (booking + FAQ + messages, two integrations) | 5 to 6 weeks | From $12,000 |
| Outbound campaign agent (lists, retries, compliance, reporting) | 6 weeks | From $14,000 |
| Additional integration or language | +1 week | From $2,500 |
Not sure you need custom? If the job is “answer my phones and book appointments”, the AI Receptionist does it from $299/mo with industry packs already built.
Related product
The ready-made version
AI Receptionist
Inbound calls answered 24/7, appointments booked into your calendar or practice system, messages and transfers handled. Live in under a week, from $299/mo.
Frequently asked questions
How natural does it sound?
Callers get sub-second responses and a voice you choose. It introduces itself as a virtual assistant; most callers just get on with it. You can hear ours at +1 (202) 868-8706.
Can it handle interruptions and accents?
Yes. We test with recordings from your actual callers, including Spanish where relevant, and tune until the transcript accuracy is where it needs to be.
What happens when it does not know something?
It says so and follows your rule: transfer, take a message, or schedule a callback. It never invents an answer about pricing, medical, or legal questions.
Who pays for the phone minutes?
You do, directly to the provider, at roughly $0.07 to $0.10 per minute. Your accounts, your billing, no markup.
Can we change the script later?
Yes. During the 30-day tuning window we do it; after that, you can edit prompts yourself or keep us on a retainer.
Bring us twenty call recordings
That is all discovery needs. We will tell you what an agent can take off your team and what it should never touch.