Mozilla Common Voice
Don’t want to install Mozilla Common Voice? Drop the file here.
The first 20 minutes of any recording are transcribed free: a recording up to 20 minutes transcribes in full, a longer one is previewed, and a pack from $6 (500 minutes) transcribes the rest and opens every export, and credits never expire.
Crowd-sourced multilingual speech corpus — 30k+ hours across 130 languages.
Best for multilingual ASR training, low-resource language baselines, accent/dialect coverage. Pricing: free.
What it is
Mozilla Common Voice is the largest public crowd-sourced multilingual speech corpus. Volunteers read prompted sentences in their language; the validated subset is the training-grade slice. Versions ship every 6 months (cv-17.0 = 2024-03). License: CC0.
Watch out for: CC0 1.0 (public domain) · read-prompt speech · variable per-language quality (en/de/fr massive, many languages <50h) · validated vs. invalidated splits matter. Cite: Ardila et al., LREC 2020.
Install / use
from datasets import load_dataset; ds = load_dataset('mozilla-foundation/common_voice_17_0', 'en')What people actually do with Mozilla Common Voice-style transcription
The tool is the means. These are the jobs — each one priced at published rates, each one wired up on its own page.
Features
| Speaker diarization | No |
| Word-level timestamps | No |
| Streaming / real-time | No |
| Languages supported | 130 |
| HIPAA eligible | No |
Mozilla Common Voice vs Whipscribe
| Feature | Mozilla Common Voice | Whipscribe |
|---|---|---|
| Category | Open source | Transcription APIs |
| Pricing | free | $6–$24 one-time packs (credits never expire) · first 20 minutes free |
| Speaker identification | No | Named in the summary, key quotes and chapters |
| Word timestamps | No | Yes |
| Streaming | No | No |
| Languages | 130 | 99 |
| Platforms | HuggingFace, Web | Web, API, MCP |
Alternatives to Mozilla Common Voice
Frequently asked about Mozilla Common Voice
Is Mozilla Common Voice free?
Yes. Mozilla Common Voice is free and open source.
Does Mozilla Common Voice work on Mac, Windows and Linux?
Mozilla Common Voice runs on HuggingFace and Web. It is not listed for other platforms; check the vendor for anything beyond HuggingFace and Web.
How do I install Mozilla Common Voice?
Download the installer for your platform from the vendor. No terminal needed.
How many languages does Mozilla Common Voice support?
Mozilla Common Voice lists 130 languages. That is the Whisper-family multilingual set, so quality varies by language — English and the large European languages are strongest.
Does Mozilla Common Voice identify different speakers?
No. Mozilla Common Voice does not label speakers; a conversation comes back as one continuous text. If you need speaker labels, that is a separate tool or a different service.
Does Mozilla Common Voice give word-level timestamps?
No — Mozilla Common Voice produces segment or sentence timing only, so subtitle cues can land mid-word.
Can Mozilla Common Voice transcribe live audio?
No — Mozilla Common Voice works on finished files, not a live stream.
Is Mozilla Common Voice HIPAA compliant?
Mozilla Common Voice does not claim HIPAA compliance. For PHI, run it on infrastructure you control or choose a service that will sign a BAA.
What are the limitations of Mozilla Common Voice?
CC0 1.0 (public domain) · read-prompt speech · variable per-language quality (en/de/fr massive, many languages <50h) · validated vs. invalidated splits matter. Cite: Ardila et al., LREC 2020.
Who is Mozilla Common Voice best for?
Multilingual ASR training, low-resource language baselines, accent/dialect coverage.
Does Mozilla Common Voice run offline?
Mozilla Common Voice runs on your own machine — it is open source, so nothing leaves the computer unless you configure it to.
Where is the Mozilla Common Voice source code?
On GitHub at github.com/mozilla-foundation/common_voice_17_0. It is maintained by Mozilla Foundation.
What kind of tool is Mozilla Common Voice?
In this directory Mozilla Common Voice is filed under dataset as a open-source tool.
What are the alternatives to Mozilla Common Voice?
There is a side-by-side page at /tools/common-voice-alternatives comparing Mozilla Common Voice with the closest tools in the same category on price, platform and features.
Can I automate Mozilla Common Voice-style transcription without running it myself?
Yes. If what you want is transcripts rather than the tool itself, Whipscribe does the same job as a hosted API: submit a file or URL, poll a job id, pull the result as txt, json, srt, vtt or docx. $0.012 a minute — about $0.72 an audio hour — bought as credits that never expire. The automation recipes on this site show it wired to Drive folders, Zoom recordings, S3 buckets and no-code platforms.
Whipscribe is a hosted transcription service. If you want transcripts without running infrastructure, paste a URL or drop a file in the form below — you'll have a transcript in seconds.
Transcribe your recordings
Running Mozilla Common Voice yourself? Send the same file here and compare the transcript. Transcribe any language, any recording · Transcription services from $0.29 an hour · Transcribe from any meeting or recording platform · How to transcribe, step by step
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Long recording to get through?
One file up to 10 hours, as an upload or a link: see MP3 to text for long recordings, a podcast episode as text from its link and the SRT file generator.
Rather have it done for you?
Free tools cost setup time. When you want a finished transcript instead: see an honest roundup of the best transcription services, cheap transcription services and the real cost per hour and transcription services from $6.