# IBM watsonx Speech to Text Review

> IBM watsonx Speech to Text review: Enterprise cloud STT API. Verified pricing, features, and the strongest alternatives in Speech-to-text APIs.

![IBM watsonx Speech to Text logo](https://www.versusref.com/logos/ibm-watson-stt.png)

Enterprise cloud STT API

Among the 43 speech-to-text tools we track, IBM watsonx Speech to Text has the 35th-widest language coverage.

See pricing · facts verified Jul 20, 2026

## What we know about IBM watsonx Speech to Text

IBM watsonx Speech to Text sits in the speech-to-text apis category, where it is enterprise cloud STT API. We keep this IBM watsonx Speech to Text profile grounded in primary sources, each fact dated to when we last confirmed it.

IBM watsonx 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 IBM watsonx Speech to Text quote, it is the fastest way for us to close that gap.

On capabilities, IBM watsonx Speech to Text covers language auto-detection, word-level timestamps, custom vocabulary / keyterm boosting, soc 2 type ii, gdpr / eu data residency, and self-host / on-prem option, and does not offer entity detection, sentiment analysis, and summarization endpoint. Each of those is verified against IBM watsonx Speech to Text's own docs or dashboard, not marketing copy.

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

Among the 43 speech-to-text tools in our matrix, IBM watsonx Speech to Text leads with the 35th-widest language coverage; the fact sheet below has the raw numbers behind that placement.

In total we track 27 verified facts for IBM watsonx 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 IBM watsonx Speech to Text fact sheet below.

## IBM watsonx Speech to Text pricing

Published rates: batch $0.02/min · streaming $0.02/min, verified Jul 20, 2026 ([source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-faq-pricing)).

| Monthly volume | Batch bill | Streaming bill |
| --- | --- | --- |
| 1K min/mo | $20 | $20 |
| 10K min/mo | $200 | $200 |
| 100K min/mo | $2,000 | $2,000 |

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 | 0.02 $/audio-min | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-faq-pricing) |
| Streaming price per audio minute | 0.02 $/audio-min | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-faq-pricing) |
| Pricing model | usage | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-faq-pricing) |
| Free tier quota | 500 min/month | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-faq-pricing) |
| Published volume discounts | Yes - $0.01/min above 1M min/mo | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-faq-pricing) |
| Concurrency on base plan | 100 concurrent (Plus) | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-faq-pricing) |

### Capabilities

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Languages supported | 14 languages | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/models-ng.md) |
| Language auto-detection | ✓  Yes | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |
| Speaker diarization | ✓  Included | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-speaker-labels) |
| Diarization add-on price per minute | 0 $/audio-min | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-speaker-labels) |
| PII redaction | ✓  Included | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |
| PII redaction add-on price per minute | 0 $/audio-min | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |
| Word-level timestamps | ✓  Yes | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |
| Custom vocabulary / keyterm boosting | ✓  Yes | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |
| Entity detection | ✗  No | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |
| Sentiment analysis | ✗  No | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |
| Summarization endpoint | ✗  No | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |
| Speech translation | ✗  No | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |
| Priced audio-intelligence add-ons | Smart formatting, profanity filter, keywords | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |

### Compliance & trust

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| HIPAA BAA available | ◑  Enterprise only | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/data-security.md) |
| SOC 2 Type II | ✓  Yes | Jul 20 | [source](https://www.ibm.com/products/cloud/compliance/soc-2) |
| GDPR / EU data residency | ✓  Yes | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/data-security.md) |
| Self-host / on-prem option | ✓  Yes | Jul 20 | [source](https://www.ibm.com/products/speech-to-text) |

### Build experience

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Official SDKs | Node.js, Python, Java, .NET, browser JS | Jul 20 | [source](https://github.com/watson-developer-cloud) |
| Max file size / duration | 100 MB sync / 1 GB async | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-audio-formats) |
| Supported audio formats | FLAC, MP3, WAV, Ogg, WebM, L16, mulaw, alaw | Jul 20 | [source](https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-audio-formats) |
| Websocket streaming API | ✓  Yes | Jul 20 | [source](https://github.com/ibm-cloud-docs/speech-to-text/blob/master/features.md) |

## IBM watsonx Speech to Text head-to-head

| Comparison | Record | Per use case |
| --- | --- | --- |
| [IBM watsonx Speech to Text vs Deepgram](https://www.versusref.com/stt/deepgram-vs-ibm-watson-stt/) | won 0 · lost 2 · tied 2 | Developers: lost; Dictation: tie; Self-Hosted: tie; Voice Agents: lost |

Source: https://www.versusref.com/stt/tools/ibm-watson-stt/