# Soniox Review

> Soniox review: Ultra-low-cost multilingual STT + real-time translation API. Verified pricing, features, and the strongest alternatives in Speech-to-text APIs.

![Soniox logo](https://www.versusref.com/logos/soniox.png)

Ultra-low-cost multilingual STT + real-time translation API

Among the 43 speech-to-text tools we track, Soniox has the 20th-widest language coverage.

See pricing · facts verified Jul 20, 2026

## What we know about Soniox

This is our verified profile of Soniox, a speech-to-text apis platform - ultra-low-cost multilingual STT + real-time translation API. Every fact about Soniox below carries the source it came from and the day we checked it.

Soniox 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 Soniox quote, it is the fastest way for us to close that gap.

On capabilities, Soniox covers language auto-detection, word-level timestamps, custom vocabulary / keyterm boosting, speech translation, soc 2 type ii, and gdpr / eu data residency, and does not offer entity detection, sentiment analysis, and summarization endpoint. Each of those is verified against Soniox's own docs or dashboard, not marketing copy.

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

Soniox ranks the 20th-widest language coverage of the 43 speech-to-text tools we track, so where it lands for you depends on which of those matters more.

In total we track 27 verified facts for Soniox 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 Soniox fact sheet below.

## Soniox pricing

Published rates: batch $0.0017/min · streaming $0.002/min, verified Jul 20, 2026 ([source](https://soniox.com/pricing)).

| Monthly volume | Batch bill | Streaming bill |
| --- | --- | --- |
| 1K min/mo | $1.67 | $2 |
| 10K min/mo | $16.67 | $20 |
| 100K min/mo | $166.70 | $200 |

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://soniox.com/pricing) |
| Streaming price per audio minute | 0.002 $/audio-min | Jul 20 | [source](https://soniox.com/pricing) |
| Pricing model | usage | Jul 20 | [source](https://soniox.com/pricing) |
| Free tier quota | None - free credits discontinued 2025-10 | Jul 20 | [source](https://soniox.com/blog/2025-10-27-free-credits-update-for-soniox-api) |
| Published volume discounts | Enterprise/committed-use discounts - contact sales | Jul 20 | [source](https://soniox.com/pricing) |
| Concurrency on base plan | 10 concurrent websocket sessions; 100 requests/min | Jul 20 | [source](https://soniox.com/docs/stt/rt/limits-and-quotas) |

### Capabilities

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| WER (third-party benchmark) | 3.81 % WER | Jul 20 | [source](https://artificialanalysis.ai/speech-to-text) |
| WER (vendor-claimed) | ~1.25 % WER | Jul 20 | [source](https://soniox.com/benchmarks) |
| Streaming latency (vendor-claimed) | ~249 ms | Jul 20 | [source](https://soniox.com/benchmarks) |
| Languages supported | 60 languages | Jul 20 | [source](https://soniox.com/docs/stt/concepts/supported-languages) |
| Language auto-detection | ✓  Yes | Jul 20 | [source](https://soniox.com/docs/stt/concepts/language-identification) |
| Speaker diarization | ✓  Included | Jul 20 | [source](https://soniox.com/pricing) |
| PII redaction | ✗  Not available | Jul 20 | [source](https://soniox.com/docs/sitemap.xml) |
| Word-level timestamps | ✓  Yes | Jul 20 | [source](https://soniox.com/docs/stt/concepts/timestamps) |
| Custom vocabulary / keyterm boosting | ✓  Yes | Jul 20 | [source](https://soniox.com/docs/stt/concepts/context) |
| Entity detection | ✗  No | Jul 20 | [source](https://soniox.com/docs/sitemap.xml) |
| Sentiment analysis | ✗  No | Jul 20 | [source](https://soniox.com/docs/sitemap.xml) |
| Summarization endpoint | ✗  No | Jul 20 | [source](https://soniox.com/docs/sitemap.xml) |
| Speech translation | ✓  Yes | Jul 20 | [source](https://soniox.com/pricing) |

### Compliance & trust

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| HIPAA BAA available | ✓  Yes | Jul 20 | [source](https://soniox.com/docs/security-and-privacy) |
| SOC 2 Type II | ✓  Yes | Jul 20 | [source](https://soniox.com/docs/security-and-privacy) |
| GDPR / EU data residency | ✓  Yes | Jul 20 | [source](https://soniox.com/docs/data-residency) |
| Self-host / on-prem option | ✗  No | Jul 20 | [source](https://soniox.com/docs/security-and-privacy) |

### Build experience

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Official SDKs | Python, Node.js, Web JS, React, React Native | Jul 20 | [source](https://soniox.com/docs/sdk) |
| Max file size / duration | 300 min per file; 10 GB total file storage | Jul 20 | [source](https://soniox.com/docs/stt/async/limits-and-quotas) |
| Supported audio formats | aac | Jul 20 | [source](https://soniox.com/docs/stt/rt/real-time-transcription) |
| Websocket streaming API | ✓  Yes | Jul 20 | [source](https://soniox.com/docs/stt/rt/real-time-transcription) |

## Soniox head-to-head

| Comparison | Record | Per use case |
| --- | --- | --- |
| [Soniox vs Deepgram](https://www.versusref.com/stt/deepgram-vs-soniox/) | won 3 · lost 3 · tied 1 | Call Centers: won; Developers: won; Dictation: tie; Medical: lost; Meetings: lost; Self-Hosted: lost; Voice Agents: won |
| [Soniox vs AssemblyAI](https://www.versusref.com/stt/assemblyai-vs-soniox/) | won 0 · lost 4 · tied 1 | Dictation: tie; Medical: lost; Meetings: lost; Self-Hosted: lost; Voice Agents: lost |

Source: https://www.versusref.com/stt/tools/soniox/