ONNX

by Linux Foundation

Open exchange format used by every ASR optimizer.

TL;DR

Open exchange format used by every ASR optimizer.

Best for lingua franca between ASR training stacks and runtime libraries. Pricing: free.

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

What it is

The Open Neural Network Exchange format. Apache-2.0.

Best for: Lingua franca between ASR training stacks and runtime libraries.
Watch out for: Specification only — pair with a runtime.

Install / use

pip install onnx

Features

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

ONNX vs Whipscribe

FeatureONNXWhipscribe
CategoryOpen sourceTranscription APIs
Pricingfreefree beta
Speaker diarizationNoYes
Word timestampsYesYes
StreamingNoNo
Languages9999
PlatformsLinux, macOS, WindowsWeb, API, MCP

Alternatives to ONNX

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Whipscribe is a managed faster-whisper + whisperX 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.