An AI voice agent typically costs $2,000 to $5,000 to build, $400 to $1,200 per month in platform fees, and $0.07 to $0.20 per minute in call costs. A small business handling 300 to 1,500 minutes a month should budget roughly $900 to $1,900 total monthly after setup. Ongito’s voice agents are English-only today.
What’s the one-time build cost for an AI voice agent?
The one-time build cost covers call flow design, phone number setup, CRM or calendar integration, voice selection, and testing, and it usually runs $2,000 to $5,000 depending on complexity. A simple agent that answers FAQs and books appointments sits at the low end. An agent that qualifies leads, transfers calls conditionally, and syncs to a custom dashboard sits higher. Ongito’s AI Voice Agent build is a flat $4,800, which covers the full call flow, integration with your booking system or CRM, and testing across real call scenarios before launch.
What are the typical monthly platform fees?
Monthly platform fees pay for hosting, the underlying language model, call monitoring, and ongoing tuning, and they generally range $400 to $1,200 depending on the vendor and call volume included. Platforms like Vapi, Retell AI, Bland AI, and Synthflow charge base platform fees in this range before per-minute usage is added on top. Ongito charges a flat $1,200/mo for its voice agent, which includes hosting, monitoring, a monthly performance review, and a set number of included call minutes before overage applies.
How much do per-minute call costs add up to?
Per-minute costs combine telephony charges and AI processing, and they typically land between $0.07 and $0.20 per minute depending on the voice model and call complexity. Telephony alone (a provider like Twilio) can run under $0.01 per minute, but the AI voice layer, speech-to-text, and text-to-speech processing add most of the cost. A business doing 500 minutes a month at $0.12 per minute spends about $60 in usage on top of the platform fee.
| Monthly call volume | Approx. per-minute cost | Estimated usage cost | Platform fee | Total monthly |
|---|---|---|---|---|
| 300 minutes | $0.10/min | $30 | $1,200 | $1,230 |
| 800 minutes | $0.12/min | $96 | $1,200 | $1,296 |
| 2,000 minutes | $0.15/min | $300 | $1,200-$2,400 | $1,500-$1,700 |
What’s a realistic total monthly cost for a small business?
Most small businesses land between $900 and $1,900 a month total, after the one-time build, once platform fees and per-minute usage are combined. A single-location business fielding 300 to 800 calls a month sits at the lower end. A multi-location business or one running the agent for both inbound support and outbound follow-up calls sits closer to the upper end. Budgeting the build cost separately from the recurring cost matters because owners often forget to plan for month two and beyond.
How does this compare to a human receptionist or answering service?
An AI voice agent runs 24/7 without overtime, sick days, or turnover, which is the main cost advantage over hiring staff to cover the same hours. A single receptionist salary alone typically exceeds the full annual cost of an AI voice agent, before adding benefits, training, and the coverage gaps that come with vacation and turnover. The AI agent also scales instantly during call spikes, something a one-person front desk cannot do.
Does Ongito’s AI voice agent support languages other than English?
No, Ongito’s AI voice agents are English-only today. If you need multilingual customer contact, Ongito’s chat agents on WhatsApp, LINE, and web chat do support other languages including Japanese text, so a common setup pairs an English voice agent for phone calls with a multilingual chat agent for messaging. See AI agents for how the two work together.
What’s included in Ongito’s AI voice agent pricing?
Ongito’s voice agent is $4,800 to build and $1,200/mo to run, and both numbers are flat, not starting-at estimates.
- Build ($4,800, one-time): call flow design, phone number provisioning, CRM or calendar integration, and pre-launch testing on real call scripts.
- Monthly ($1,200/mo): hosting, uptime monitoring, a monthly call-log review, minor flow adjustments, and a set block of included minutes.
- Overage: additional minutes beyond the included block are billed per minute at a fixed rate agreed before launch, so there are no surprise invoices.
For context, here is how the voice agent compares to Ongito’s other core services:
| Service | Setup | Monthly |
|---|---|---|
| AI Chatbot Agent | $3,600 | $950/mo |
| AI Voice Agent | $4,800 | $1,200/mo |
| Review & Reputation System | $2,400 | $700/mo |
| SEO & AI-Search | $3,600 | $1,200/mo |
| Lead Generation | $6,000 | $1,400/mo |
| Custom CRM & Dashboard | $7,100 | $950/mo |
Businesses that want a voice agent alongside review generation often add the Review & Reputation System, since a call that ends in a booked appointment is a natural moment to request a review. See the full services list for how these fit together.
The fastest way to get an exact number for your call volume is a short audit rather than a generic quote. Book a free 30-minute automation audit and get a cost breakdown based on your actual call patterns.