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bijalsanghavi/justtalk-coreml

sourceHugging Faceapache-2.0updated 6d agoView on Hugging Face
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Model Card

justtalk-coreml — CoreML speech models for Just Talk

CoreML (.mlmodelc) conversions of permissively licensed Whisper models, used on-device by Just Talk via WhisperKit. We host them ourselves so the exact weights we tested stay pinned and reachable, independent of any third-party repo.

Everything here is a derivative work of an upstream Apache-2.0 model. Nothing in this repository is trained by us.

Contents

DirectoryUpstreamUpstream licenceWhat we changed
openai_whisper-small/`openai/whisper-small`Apache-2.0 (model card); the source repo ships MITConverted PyTorch → CoreML .mlmodelc (MelSpectrogram, AudioEncoder, TextDecoder), fp16, ANE-oriented attention layout
vasista22_whisper-hindi-medium/`vasista22/whisper-hindi-medium`Apache-2.0Same conversion. Alignment heads borrowed from openai/whisper-medium where the fine-tune omitted them
vasista22_whisper-hindi-medium_q8/same as aboveApache-2.0Same conversion, plus 8-bit per-grouped-channel palettization of the encoder and decoder

A 4-bit variant was produced during evaluation and is deliberately not published: it measurably degraded Hindi accuracy (~27% WER vs ~18% for 8-bit).

Provenance

  • —Conversion tool: `argmaxinc/whisperkittools`, pinned at commit 84f77a8 (MIT, Copyright (c) 2024 Argmax, Inc.).
  • —Conversion performed 2026-07-15 by the script dev/convert-indic-whisper.sh in the Just Talk repo.
  • —Upstream revisions: the exact source revision was not recorded at conversion time. For reference, as of 2026-09-16 the upstream repositories are at openai/whisper-small → 973afd24965f (last modified 2024-02-29) and vasista22/whisper-hindi-medium → d53532a4dc1d (last modified 2023-04-24). Both have been unchanged since well before our conversion date, but we state this as a reference point rather than a claim about the bytes we converted.

Licence

Apache License 2.0 — full text in `LICENSE`; attribution and modification notices in `NOTICE`. Redistributed by Trika. If you use these weights, keep both files with them.