icefall

by k2-fsa

ASR recipes (Conformer / Zipformer / Pruned Transducer) for k2 + sherpa.

TL;DR

ASR recipes (Conformer / Zipformer / Pruned Transducer) for k2 + sherpa.

Best for training Zipformer / pruned-RNNT models that run on Sherpa-ONNX at the edge. Pricing: free.

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

What it is

Companion recipes repo for k2. Home of the Zipformer architecture. Apache-2.0.

Best for: Training Zipformer / pruned-RNNT models that run on Sherpa-ONNX at the edge.
Watch out for: Recipe-driven workflow expects shell + Python comfort.

Install / use

git clone https://github.com/k2-fsa/icefall

Features

Speaker diarizationNo
Word-level timestampsYes
Streaming / real-timeNo
Languages supported40
HIPAA eligibleNo

icefall vs Whipscribe

FeatureicefallWhipscribe
CategoryOpen sourceTranscription APIs
Pricingfreefree beta
Speaker diarizationNoYes
Word timestampsYesYes
StreamingNoNo
Languages4099
PlatformsLinuxWeb, API, MCP

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