NeMo Guardrails
Don’t want to install NeMo Guardrails? 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.
Safety layer often paired with Whisper voice agents.
Best for constraining LLM responses on top of Whisper ASR. Pricing: free.
What it is
NVIDIA's open guardrails toolkit. Apache-2.0.
Watch out for: Not an ASR engine.
Install / use
pip install nemoguardrailsWhat people actually do with NeMo Guardrails-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 | 99 |
| HIPAA eligible | No |
Links
NeMo Guardrails vs Whipscribe
| Feature | NeMo Guardrails | 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 | 99 | 99 |
| Platforms | Linux, macOS | Web, API, MCP |
Alternatives to NeMo Guardrails
Frequently asked about NeMo Guardrails
Is NeMo Guardrails free?
Yes. NeMo Guardrails is free and open source.
Does NeMo Guardrails work on Mac, Windows and Linux?
NeMo Guardrails runs on Linux and macOS. It is not listed for other platforms; check the vendor for anything beyond Linux and macOS.
How do I install NeMo Guardrails?
With pip: `pip install nemoguardrails`. You need Python and, for most audio tools, ffmpeg on your PATH first.
How many languages does NeMo Guardrails support?
NeMo Guardrails lists 99 languages. That is the Whisper-family multilingual set, so quality varies by language — English and the large European languages are strongest.
Does NeMo Guardrails identify different speakers?
No. NeMo Guardrails 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 NeMo Guardrails give word-level timestamps?
Yes — NeMo Guardrails produces timing per word, which is what subtitle cues and clip boundaries need.
Can NeMo Guardrails transcribe live audio?
No — NeMo Guardrails works on finished files, not a live stream.
Is NeMo Guardrails HIPAA compliant?
NeMo Guardrails 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 NeMo Guardrails?
Not an ASR engine.
Who is NeMo Guardrails best for?
Constraining LLM responses on top of Whisper ASR.
Does NeMo Guardrails run offline?
NeMo Guardrails runs on your own machine — it is open source, so nothing leaves the computer unless you configure it to.
Can I use NeMo Guardrails in the browser?
No — NeMo Guardrails is a Linux and macOS application, not a web app. You install it rather than sign in to it.
Where is the NeMo Guardrails source code?
On GitHub at github.com/NVIDIA/NeMo-Guardrails. It is maintained by NVIDIA.
What kind of tool is NeMo Guardrails?
In this directory NeMo Guardrails is filed under downstream, safety as a open-source tool.
What are the alternatives to NeMo Guardrails?
There is a side-by-side page at /tools/nemo-guardrails-alternatives comparing NeMo Guardrails 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.
Transcribe your recordings
Running NeMo Guardrails 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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Have the recording already?
Skip the setup and send the file or the link: see transcribing a long MP3 or M4A, how to transcribe a podcast and an SRT subtitle file from any recording.
Rather have it done for you?
Free tools cost setup time. When you want a finished transcript instead: see how the best transcription services compare, cheap transcription services and the real cost per hour and our transcription service with prices and turnaround.