AI Voice Agents · true cost · Updated November 2026
The true cost of AI voice agents
What you'll actually pay. Of the 13 AI voice agents tools we track, 7 price on a basis this column cannot carry, 12 charge usage overages. Here's every tool's entry price and its hidden-cost flags — each linked to its sourced record.
The hidden-cost picture
- Not priced monthly: 7 publish a figure on another basis — usage rates, non-USD, or annual-only.
- Usage overages: 12 charge for going over plan limits.
- Cheapest published: Cartesia from $5/mo.
As of · re-verified with each catalog refresh
AI Voice Agents — entry price & hidden-cost flags
| Tool | Entry price | Usage overages | Setup fee |
|---|---|---|---|
| Cartesia | $5/mo | Yes | — |
| ElevenLabs Agents | $6/mo | Yes | — |
| Vapi | $29/mo | Yes | — |
| LiveKit Agents | $50/mo | Yes | — |
| Ultravox | $100/mo | Yes | — |
| Bland AI | $299/mo | Yes | — |
| Deepgram Voice Agent API | quote-only | Yes | — |
| Millis AI | quote-only | Yes | — |
| Pipecat Cloud | quote-only | Yes | — |
| Retell AI | quote-only | Yes | — |
| Synthflow | usage-priced | — | — |
| Telnyx Voice AI Agents | quote-only | Yes | — |
| Twilio ConversationRelay | quote-only | Yes | — |
Prices and fee terms re-verified with each catalog refresh. Last catalog update 2026-11-01. "Quote-only" means the vendor publishes no self-serve price.
Frequently asked questions
Does AI voice agents have hidden fees?
Across the 13 AI voice agents tools we track: 7 price on a basis this column cannot carry, 12 charge usage overages. As of 2026-11-01.
What is the cheapest AI voice agent with published pricing?
Cartesia, from $5/mo (note: usage overages apply). Verified 2026-11-01.
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