NVIDIA NeMo
by NVIDIA
Toolkit + model zoo behind Canary, Parakeet, Conformer, FastConformer.
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TL;DR
Best for anyone training, fine-tuning, or serving state-of-the-art ASR on NVIDIA GPUs. Pricing: free.
Category
Open source
License
Apache-2.0
Stars
★ 18.0k
Last push
2026-08-08
Pricing
free
Platforms
Linux, Docker
What it is
NeMo is NVIDIA's conversational-AI toolkit. Ships Canary-1B/-180M-flash, Parakeet-RNNT/CTC/TDT, Conformer-CTC large, FastConformer, and Citrinet under permissive licenses on NGC. Apache-2.0.
Best for: Anyone training, fine-tuning, or serving state-of-the-art ASR on NVIDIA GPUs.
Watch out for: Heavy install; tight NVIDIA dependency; CPU inference impractical.
Watch out for: Heavy install; tight NVIDIA dependency; CPU inference impractical.
Install / use
pip install nemo_toolkit[asr]Features
| Speaker diarization | Yes |
| Word-level timestamps | Yes |
| Streaming / real-time | No |
| Languages supported | 60 |
| HIPAA eligible | No |
Links
NVIDIA NeMo vs Whipscribe
| Feature | NVIDIA NeMo | Whipscribe |
|---|---|---|
| Category | Open source | Transcription APIs |
| Pricing | free | $4–$24 one-time packs (credits never expire) · $2 single unlock · 60 min free on signup |
| Speaker diarization | Yes | Yes |
| Word timestamps | Yes | Yes |
| Streaming | No | No |
| Languages | 60 | 99 |
| Platforms | Linux, Docker | Web, API, MCP |
Alternatives to NVIDIA NeMo
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