NVIDIA Apex

by NVIDIA

Mixed-precision / fused ops library used in NeMo training.

TL;DR

Mixed-precision / fused ops library used in NeMo training.

Best for whisper / Conformer training with FP16 / fused optimizers. Pricing: free.

Category
Open source
License
—
Stars
—
Last push
—
Pricing
free
Platforms
Linux

What it is

NVIDIA's library of training primitives. BSD-3-Clause.

Best for: Whisper / Conformer training with FP16 / fused optimizers.
Watch out for: Build complexity; superseded for some uses by torch.amp.

Install / use

git clone https://github.com/NVIDIA/apex

Features

Speaker diarizationNo
Word-level timestampsYes
Streaming / real-timeNo
Languages supported99
HIPAA eligibleNo

NVIDIA Apex vs Whipscribe

FeatureNVIDIA ApexWhipscribe
CategoryOpen sourceTranscription APIs
Pricingfreefree beta
Speaker diarizationNoYes
Word timestampsYesYes
StreamingNoNo
Languages9999
PlatformsLinuxWeb, API, MCP

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