# Ultravox Review

> Ultravox review: Realtime speech model + platform. Verified pricing, features, and the strongest alternatives in Voice AI.

![Ultravox logo](https://www.versusref.com/logos/ultravox.png)

Realtime speech model + platform

Among the 23 voice ai tools we track, Ultravox has the 7th-cheapest per-minute rate - a fit for cost-sensitive, high-volume work.

From $0.05/min · facts verified Jul 15, 2026

## What we know about Ultravox

This is our verified profile of Ultravox, a voice ai platform - realtime speech model + platform. Every fact about Ultravox below carries the source it came from and the day we checked it.

On pricing, Ultravox starts at $0.05 per minute for its entry tier. That is the sticker rate: real production cost usually runs higher once you add a language model, a voice provider, and telephony minutes, and we model Ultravox closer to 0.055-0.055 USD/min all-in.

New Ultravox accounts get 30 minutes free, then $0.05/min to test with before a card is required, which is enough to run a handful of real calls and judge latency and voice quality for your own script rather than a demo.

On capabilities, Ultravox covers native sip trunking, bring-your-own tts voice, native outbound campaigns, warm transfer to human, built-in knowledge base, and dtmf / ivr navigation, and does not offer annual contract required for best pricing?, bring-your-own llm, and interruption handling (barge-in). Each of those is verified against Ultravox's own docs or dashboard, not marketing copy.

On performance, Ultravox reports 5 calls concurrent calls on the base plan. Latency figures are vendor claims until we measure them ourselves, and they are labeled that way on the Ultravox fact sheet, so treat them as a starting point rather than a guarantee.

Placed against the 23 voice ai tools we track, Ultravox's strongest showing is the 7th-cheapest per-minute rate, while it trails at 9th on base concurrency - a spread worth weighing against your own priorities.

In total we track 23 verified facts for Ultravox today, each linking the primary source it came from so you can check our work - and vendor claims we have not measured ourselves are labeled as such on the Ultravox fact sheet below.

## Ultravox pricing

≈ $0.055 per minute all-in (est.), verified Jul 15, 2026 ([source](https://www.ultravox.ai/pricing)).

| Monthly volume | All-in monthly bill |
| --- | --- |
| 1K min/mo | $55 |
| 10K min/mo | $550 |
| 100K min/mo | $5,500 |

All-in monthly: platform fee + per-minute + telephony. Assumes GPT-4o class model, ElevenLabs voice.

## Fact sheet

### Pricing

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Base price / min | ~$0.05 | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Real production cost / min | $0.06-0.06 | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Concurrency limit (base) | ~5 calls | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Free tier credit | 30 minutes free, then $0.05/min | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Monthly platform fee | ~$0 | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Telephony cost / min (or passthrough?) | ~$0.01 | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Annual contract required for best pricing? | ✗  No | Jul 15 | [source](https://www.ultravox.ai/pricing) |

### Capabilities

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Native SIP trunking | ✓  Yes | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Bring-your-own LLM | ✗  No | Jul 15 | [source](https://docs.ultravox.ai/overview) |
| Bring-your-own TTS voice | ✓  Yes | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Native outbound campaigns | ✓  Yes | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Warm transfer to human | ✓  Yes | Jul 15 | [source](https://docs.ultravox.ai/overview) |
| Built-in knowledge base | ✓  Yes | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Languages supported | ~26 languages | Jul 15 | [source](https://docs.ultravox.ai/overview) |
| DTMF / IVR navigation | ✓  Yes | Jul 15 | [source](https://docs.ultravox.ai/overview) |
| Interruption handling (barge-in) | ✗  No | Jul 15 | [source](https://docs.ultravox.ai/overview) |

### Build experience

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| No-code agent builder | ✗  No | Jul 15 | [source](https://docs.ultravox.ai/overview) |
| API-first (full lifecycle via API) | ✓  Yes | Jul 15 | [source](https://docs.ultravox.ai/overview) |
| Simulation/testing suite for agents | ✗  No | Jul 15 | [source](https://docs.ultravox.ai/overview) |
| White-label / sub-accounts for agencies | ✗  Not available | Jul 15 | [source](https://docs.ultravox.ai/overview) |
| Native integrations count (+ key ones: GHL, HubSpot, Zapier, Make, Twilio) | Telephony Integrations (partners) | Jul 15 | [source](https://docs.ultravox.ai/overview) |

### Commercial

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Self-serve signup | ✓  Yes | Jul 15 | [source](https://www.ultravox.ai/pricing) |
| Support tier / SLA on base plans | Priority SLA on Enterprise only | Jul 15 | [source](https://www.ultravox.ai/pricing) |

## Ultravox head-to-head

| Comparison | Record | Per use case |
| --- | --- | --- |
| [Ultravox vs Bland AI](https://www.versusref.com/voice-ai/bland-vs-ultravox/) | won 0 · lost 6 · tied 0 | No-code agency deploys: lost; Custom pipeline control: lost; Ecommerce support and orders: lost; Healthcare compliance: lost; Outbound sales campaigns: lost; SMB receptionist and booking: lost |
| [Ultravox vs ElevenLabs Agents](https://www.versusref.com/voice-ai/elevenlabs-agents-vs-ultravox/) | won 1 · lost 5 · tied 0 | No-code agency deploys: lost; Custom pipeline control: lost; Ecommerce support and orders: lost; Healthcare compliance: lost; Outbound sales campaigns: won; SMB receptionist and booking: lost |
| [Ultravox vs Retell AI](https://www.versusref.com/voice-ai/retell-vs-ultravox/) | won 0 · lost 6 · tied 0 | No-code agency deploys: lost; Custom pipeline control: lost; Ecommerce support and orders: lost; Healthcare compliance: lost; Outbound sales campaigns: lost; SMB receptionist and booking: lost |
| [Ultravox vs Vapi](https://www.versusref.com/voice-ai/ultravox-vs-vapi/) | won 0 · lost 6 · tied 0 | No-code agency deploys: lost; Custom pipeline control: lost; Ecommerce support and orders: lost; Healthcare compliance: lost; Outbound sales campaigns: lost; SMB receptionist and booking: lost |

Source: https://www.versusref.com/voice-ai/tools/ultravox/