# Grok TTS Review

> Grok TTS review: Usage-priced hosted TTS from xAI, part of the Grok Voice stack (TTS, STT, and a speech-to-speech Voice Agent API), aimed at developers who.

![Grok TTS logo](https://www.versusref.com/logos/grok-tts.png)

Usage-priced hosted TTS from xAI, part of the Grok Voice stack (TTS, STT, and a speech-to-speech Voice Agent API), aimed at developers who want low-latency voice output alongside Grok models.

Among the 16 text-to-speech tools we track, Grok TTS has the 3rd-cheapest flagship rate - a fit for cost-sensitive, high-volume work.

See pricing · facts verified Jul 20, 2026

## What we know about Grok TTS

This is our verified profile of Grok TTS, a text-to-speech apis platform - usage-priced hosted TTS from xAI, part of the Grok Voice stack (TTS, STT, and a speech-to-speech Voice Agent API), aimed at developers who want low-latency voice output alongside Grok models. Every fact about Grok TTS below carries the source it came from and the day we checked it.

Grok TTS does not publish a public per-minute rate we have been able to verify, so the price figure here stays blank until we can confirm one. We would rather show nothing than a guessed number; if you have a current Grok TTS quote, it is the fastest way for us to close that gap.

On capabilities, Grok TTS covers streaming audio output, realtime websocket api, instant voice cloning, and emotion / style controls, and does not offer self-host / on-prem option. Each of those is verified against Grok TTS's own docs or dashboard, not marketing copy.

Grok TTS ranks the 3rd-cheapest flagship rate of the 16 text-to-speech tools we track, but only 14th of 16 for stock voices, so where it lands for you depends on which of those matters more.

In total we track 12 verified facts for Grok TTS 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 Grok TTS fact sheet below.

## Grok TTS pricing

Usage-priced at $15 per 1M characters (≈ $0.0143 per audio-minute), verified Jul 20, 2026 ([source](https://docs.x.ai/docs/models)).

| Monthly volume | $ / 1M chars | $ / audio-min | Monthly bill |
| --- | --- | --- | --- |
| 200K chars/mo | $15 | $0.0143 | $3 |
| 2M chars/mo | $15 | $0.0143 | $30 |
| 20M chars/mo | $15 | $0.0142 | $300 |

Effective rates from published pricing; subscription plans resolve to plan fee plus overage. ~950 characters ≈ 1 audio minute.

## Fact sheet

### Pricing

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Price per 1M characters (flagship model) | 15 $/1M chars | Jul 20 | [source](https://docs.x.ai/docs/models) |
| Pricing model | usage-based per character, no subscription | Jul 20 | [source](https://docs.x.ai/docs/models) |

### Capabilities

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Streaming audio output | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/text-to-speech) |
| Realtime websocket API | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/text-to-speech) |
| Voice library size | 5 voices | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/text-to-speech) |
| Instant voice cloning | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/voice) |
| Languages supported | 20 languages | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/text-to-speech) |
| Emotion / style controls | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/voice) |

### Compliance & trust

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Self-host / on-prem option | ✗  No | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/text-to-speech) |

### Build experience

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Concurrency on base plan | 50 | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/text-to-speech) |
| Output formats | MP3 (default, 24 kHz / 128 kbps), WAV, PCM, mu-law, A-law | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/text-to-speech) |
| Max input per request | 15000 | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/text-to-speech) |

Source: https://www.versusref.com/tts/tools/grok-tts/