wav2letter++
Don’t want to install wav2letter++? 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.
Meta's original fast convolutional ASR system.
Best for historical reference for convolutional ASR. Pricing: free.
What it is
The wav2letter++ research codebase. BSD-3-Clause.
Watch out for: Archived; new work in fairseq / SeamlessM4T.
Install / use
git clone https://github.com/flashlight/wav2letterWhat people actually do with wav2letter++-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 | Yes |
| Streaming / real-time | No |
| Languages supported | 20 |
| HIPAA eligible | No |
Links
wav2letter++ vs Whipscribe
| Feature | wav2letter++ | 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 | Yes | Yes |
| Streaming | No | No |
| Languages | 20 | 99 |
| Platforms | Linux | Web, API, MCP |
Alternatives to wav2letter++
Frequently asked about wav2letter++
Is wav2letter++ free?
Yes. wav2letter++ is free and open source.
Does wav2letter++ work on Mac, Windows and Linux?
wav2letter++ runs on Linux. It is not listed for other platforms; check the vendor for anything beyond Linux.
How do I install wav2letter++?
Clone and run it from source: `git clone https://github.com/flashlight/wav2letter`. Expect to install its dependencies yourself — the README has the exact steps per OS.
How many languages does wav2letter++ support?
wav2letter++ lists 20 languages.
Does wav2letter++ identify different speakers?
No. wav2letter++ 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 wav2letter++ give word-level timestamps?
Yes — wav2letter++ produces timing per word, which is what subtitle cues and clip boundaries need.
Can wav2letter++ transcribe live audio?
No — wav2letter++ works on finished files, not a live stream.
Is wav2letter++ HIPAA compliant?
wav2letter++ 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 wav2letter++?
Archived; new work in fairseq / SeamlessM4T.
Who is wav2letter++ best for?
Historical reference for convolutional ASR.
Does wav2letter++ run offline?
wav2letter++ runs on your own machine — it is open source, so nothing leaves the computer unless you configure it to.
Can I use wav2letter++ in the browser?
No — wav2letter++ is a Linux application, not a web app. You install it rather than sign in to it.
Where is the wav2letter++ source code?
On GitHub at github.com/flashlight/wav2letter. It is maintained by Meta AI.
What kind of tool is wav2letter++?
In this directory wav2letter++ is filed under toolkit, research, legacy as a open-source tool.
What are the alternatives to wav2letter++?
There is a side-by-side page at /tools/wav2letter-alternatives comparing wav2letter++ with the closest tools in the same category on price, platform and features.
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.
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Running wav2letter++ 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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One file up to 10 hours, as an upload or a link: see how to transcribe an MP3 of any length, how to transcribe a podcast and the SRT file generator.
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