ONNX

by Linux Foundation

Open exchange format used by every ASR optimizer.

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TL;DR

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

Category
Open source
License
Apache-2.0
Stars
★ 21.3k
Last push
2026-08-07
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

Links

GitHub repo ↗

ONNX vs Whipscribe

FeatureONNXWhipscribe
CategoryOpen sourceTranscription APIs
Pricingfree$4–$24 one-time packs (credits never expire) · $2 single unlock · 60 min free on signup
Speaker diarizationNoYes
Word timestampsYesYes
StreamingNoNo
Languages9999
PlatformsLinux, macOS, WindowsWeb, API, MCP

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