matt-2012/parakeet-primeline-de-coreml

Parakeet TDT 0.6B v3 (German) — Core ML

A Core ML export of [primeline/parakeet-primeline](https://huggingface.co/primeline/parakeet-primeline), laid out for FluidAudio's .v3 ASR path on Apple Silicon.

This repository is a redistribution with modifications of a CC BY 4.0 model. It contains no new training. See Changes made for the exact list.

Attribution chain

NVIDIA's card states: "GOVERNING TERMS: Use of this model is governed by the CC-BY-4.0 license." No additional restrictions are imposed here, and none may be added downstream.

Changes made

Relative to primeline/parakeet-primeline:

1. 1.Exported from the `.nemo` checkpoint to Core ML with FluidInference/mobius' convert-parakeet.py.
2. 2.Patched the preprocessor input shape. The upstream converter emits a RangeDim(1, max_samples) flexible input; this export uses a fixed shape instead.
3. 3.Compiled `.mlpackage` → `.mlmodelc`. Only the compiled form is shipped.
4. 4.Renamed to FluidAudio's expectations. In particular parakeet_joint_decision_single_step → `JointDecisionv3.mlmodelc` — the 5-output v3 head. FluidAudio's .v3 path will not load the 3-output parakeet_joint_decision.
5. 5.Kept the encoder at fp16. Encoder.mlmodelc/weights/weight.bin is 1,185,860,032 bytes (~1.19 GB). This is deliberately not the int8 encoder FluidInference publishes (445,187,200 bytes) — the fp16 encoder is what this export was evaluated with.
6. 6.`parakeet_vocab.json` is byte-identical to FluidInference's (sha256:7ec60e05…98735); it is included so the bundle is self-contained.

Layout — the directory name is load-bearing

FluidAudio's AsrModels.load(from:) resolves its repository root as url.deletingLastPathComponent()/parakeet-tdt-0.6b-v3. These files must sit in a directory named exactly `parakeet-tdt-0.6b-v3` or the load fails.

parakeet-tdt-0.6b-v3/
├── Preprocessor.mlmodelc/
├── Encoder.mlmodelc/
├── Decoder.mlmodelc/
├── JointDecisionv3.mlmodelc/
└── parakeet_vocab.json

17 files, 1,224,182,759 bytes total.

Download

hf download matt-2012/parakeet-primeline-de-coreml --local-dir ./parakeet-tdt-0.6b-v3

Set ModelHub.offlineMode = true before loading. Without it, a missing file is a cue for FluidAudio to fetch the stock English NVIDIA v3 into the same directory; its cache check is filename-existence only, with no checksums.

Verifying what you got

The SHA-256 of every file. Hugging Face's LFS oid is the SHA-256, so the table can be checked against the tree API without downloading:

Stability

main is never force-pushed. Consumers should pin a commit SHA; ueberblick pins the commit tagged `v1` and verifies every file against the table above before installing it.

Citation

@misc{parakeet-tdt-0.6b-v3,
  title  = {Parakeet TDT 0.6B v3},
  author = {{NVIDIA}},
  year   = {2025},
  url    = {https://huggingface.co/nvidia/parakeet-tdt-0.6b-v3}
}