# xAI Grok Speech-to-Text Review

> xAI Grok Speech-to-Text review: Low-cost hosted STT API on the Grok stack. Verified pricing, features, and the strongest alternatives in Speech-to-text APIs.

![xAI Grok Speech-to-Text logo](https://www.versusref.com/logos/grok-stt.png)

Low-cost hosted STT API on the Grok stack

Among the 43 speech-to-text tools we track, xAI Grok Speech-to-Text has the 32nd-widest language coverage.

See pricing · facts verified Jul 20, 2026

## What we know about xAI Grok Speech-to-Text

This is our verified profile of xAI Grok Speech-to-Text, a speech-to-text apis platform - low-cost hosted STT API on the Grok stack. Every fact about xAI Grok Speech-to-Text below carries the source it came from and the day we checked it.

xAI Grok Speech-to-Text 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 xAI Grok Speech-to-Text quote, it is the fastest way for us to close that gap.

On capabilities, xAI Grok Speech-to-Text covers language auto-detection, word-level timestamps, custom vocabulary / keyterm boosting, soc 2 type ii, and websocket streaming api, and does not offer self-host / on-prem option. Each of those is verified against xAI Grok Speech-to-Text's own docs or dashboard, not marketing copy.

For compliance, with xAI Grok Speech-to-Text: SOC 2 Type II is in place. If you are in a regulated space, confirm the current posture with xAI Grok Speech-to-Text before you commit, since these change plan by plan.

Among the 43 speech-to-text tools in our matrix, xAI Grok Speech-to-Text leads with the 32nd-widest language coverage; the fact sheet below has the raw numbers behind that placement.

In total we track 18 verified facts for xAI Grok Speech-to-Text 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 xAI Grok Speech-to-Text fact sheet below.

## xAI Grok Speech-to-Text pricing

Published rates: batch $0.0017/min · streaming $0.0033/min, verified Jul 20, 2026 ([source](https://docs.x.ai/developers/pricing)).

| Monthly volume | Batch bill | Streaming bill |
| --- | --- | --- |
| 1K min/mo | $1.67 | $3.33 |
| 10K min/mo | $16.67 | $33.33 |
| 100K min/mo | $166.70 | $333.30 |

Sticker rates only; diarization and PII redaction add-ons price in the stack builder.

## Fact sheet

### Pricing

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Batch price per audio minute | 0.002 $/audio-min | Jul 20 | [source](https://docs.x.ai/developers/pricing) |
| Streaming price per audio minute | 0.003 $/audio-min | Jul 20 | [source](https://docs.x.ai/developers/pricing) |
| Pricing model | usage | Jul 20 | [source](https://docs.x.ai/developers/pricing) |
| Concurrency on base plan | 100 streaming sessions/team | Jul 20 | [source](https://docs.x.ai/developers/models/speech-to-text) |

### Capabilities

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| WER (third-party benchmark) | 4.03 % WER | Jul 20 | [source](https://artificialanalysis.ai/speech-to-text) |
| Languages supported | 24 | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/speech-to-text) |
| Language auto-detection | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/speech-to-text) |
| Speaker diarization | ✓  Included | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/speech-to-text) |
| Word-level timestamps | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/rest-api-reference/inference/speech-to-text) |
| Custom vocabulary / keyterm boosting | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/speech-to-text) |
| Priced audio-intelligence add-ons | Keyterm prompting, ITN, Smart Turn, multichannel | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/speech-to-text) |

### Compliance & trust

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| HIPAA BAA available | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/faq/security) |
| SOC 2 Type II | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/faq/security) |
| Self-host / on-prem option | ✗  No | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/speech-to-text) |

### Build experience

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Official SDKs | Python, JavaScript | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/speech-to-text) |
| Max file size / duration | 500 MB max file size | Jul 20 | [source](https://docs.x.ai/developers/rest-api-reference/inference/speech-to-text) |
| Supported audio formats | WAV, MP3, OGG, Opus, FLAC, AAC, MP4, M4A, MKV | Jul 20 | [source](https://docs.x.ai/developers/rest-api-reference/inference/speech-to-text) |
| Websocket streaming API | ✓  Yes | Jul 20 | [source](https://docs.x.ai/developers/model-capabilities/audio/speech-to-text) |

## xAI Grok Speech-to-Text head-to-head

| Comparison | Record | Per use case |
| --- | --- | --- |
| [xAI Grok Speech-to-Text vs Deepgram](https://www.versusref.com/stt/deepgram-vs-grok-stt/) | won 0 · lost 3 · tied 1 | Dictation: tie; Medical: lost; Self-Hosted: lost; Voice Agents: lost |

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