# Rev AI Review

> Rev AI review: Transcription-heritage STT API with low per-hour pricing and open (non-commercial) Reverb models. Verified pricing, features, and the strongest.

![Rev AI logo](https://www.versusref.com/logos/rev.png)

Transcription-heritage STT API with low per-hour pricing and open (non-commercial) Reverb models

Among the 43 speech-to-text tools we track, Rev AI has the 21st-widest language coverage.

See pricing · facts verified Jul 20, 2026

## What we know about Rev AI

Rev AI sits in the speech-to-text apis category, where it is transcription-heritage STT API with low per-hour pricing and open (non-commercial) Reverb models. We keep this Rev AI profile grounded in primary sources, each fact dated to when we last confirmed it.

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

On capabilities, Rev AI covers language auto-detection, word-level timestamps, custom vocabulary / keyterm boosting, sentiment analysis, summarization endpoint, and speech translation. Each of those is verified against Rev AI's own docs or dashboard, not marketing copy.

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

Among the 43 speech-to-text tools in our matrix, Rev AI leads with the 21st-widest language coverage; the fact sheet below has the raw numbers behind that placement.

In total we track 25 verified facts for Rev AI 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 Rev AI fact sheet below.

## Rev AI pricing

Published rates: batch $0.0033/min, verified Jul 20, 2026 ([source](https://www.rev.ai/pricing)).

| Monthly volume | Monthly bill (batch) |
| --- | --- |
| 1K min/mo | $3.33 |
| 10K min/mo | $33.33 |
| 100K min/mo | $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 | 0.003 $/audio-min | Jul 20 | [source](https://www.rev.ai/pricing) |
| Pricing model | usage | Jul 20 | [source](https://www.rev.ai/pricing) |
| Free tier quota | Free credits equal to 5 hours of Reverb ASR | Jul 20 | [source](https://www.rev.ai/pricing) |
| Published volume discounts | Enterprise: volume-based pricing, contact sales | Jul 20 | [source](https://www.rev.ai/pricing) |
| Concurrency on base plan | Streaming: 10 streams; async multipart uploads: 5 | Jul 20 | [source](https://docs.rev.ai/api/streaming/) |

### Capabilities

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| WER (third-party benchmark) | 5.92 % WER | Jul 20 | [source](https://artificialanalysis.ai/speech-to-text) |
| WER (vendor-claimed) | ~9.68 % WER | Jul 20 | [source](https://github.com/revdotcom/reverb) |
| Languages supported | 57 | Jul 20 | [source](https://www.rev.ai/languages) |
| Language auto-detection | ✓  Yes | Jul 20 | [source](https://www.rev.ai/pricing) |
| Speaker diarization | ✓  Included | Jul 20 | [source](https://docs.rev.ai/faq/) |
| Word-level timestamps | ✓  Yes | Jul 20 | [source](https://docs.rev.ai/faq/) |
| Custom vocabulary / keyterm boosting | ✓  Yes | Jul 20 | [source](https://docs.rev.ai/api/custom-vocabulary/) |
| Sentiment analysis | ✓  Yes | Jul 20 | [source](https://www.rev.ai/pricing) |
| Summarization endpoint | ✓  Yes | Jul 20 | [source](https://www.rev.ai/pricing) |
| Speech translation | ✓  Yes | Jul 20 | [source](https://www.rev.ai/pricing) |
| Priced audio-intelligence add-ons | Language ID, sentiment, topics, translation, summaries | Jul 20 | [source](https://www.rev.ai/pricing) |

### Compliance & trust

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| HIPAA BAA available | ◑  Enterprise only | Jul 20 | [source](https://www.rev.com/security) |
| SOC 2 Type II | ✓  Yes | Jul 20 | [source](https://www.rev.com/security) |
| GDPR / EU data residency | ✓  Yes | Jul 20 | [source](https://www.rev.ai/languages) |
| Model weights license | Rev Model Non-Production License - non-commercial | Jul 20 | [source](https://huggingface.co/Revai/reverb-asr/resolve/main/LICENSE) |

### Build experience

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Official SDKs | Python, JS/TS (Node), Java, Go, Ruby | Jul 20 | [source](https://github.com/orgs/revdotcom/repositories) |
| Max file size / duration | 2 GB per multipart upload; max 17 hours audio | Jul 20 | [source](https://docs.rev.ai/api/asynchronous/) |
| Supported audio formats | All FFmpeg formats incl MP3, MP4, WAV, FLAC, Ogg, PCM | Jul 20 | [source](https://docs.rev.ai/api/asynchronous/) |
| Websocket streaming API | ✓  Yes | Jul 20 | [source](https://docs.rev.ai/api/streaming/) |

### Commercial

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| GitHub stars | 436 | Jul 20 | [source](https://github.com/revdotcom/reverb) |

## Rev AI head-to-head

| Comparison | Record | Per use case |
| --- | --- | --- |
| [Rev AI vs AssemblyAI](https://www.versusref.com/stt/assemblyai-vs-rev/) | won 0 · lost 4 · tied 2 | Developers: tie; Dictation: tie; Medical: lost; Meetings: lost; Self-Hosted: lost; Voice Agents: lost |
| [Rev AI vs Deepgram](https://www.versusref.com/stt/deepgram-vs-rev/) | won 1 · lost 1 · tied 1 | Developers: won; Dictation: tie; Voice Agents: lost |

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