Model reference · open weights

mhubert-25hz

Embeddings slprl Embeddings 1 build Open weights 1k dl/mo

mhubert-25hz is an open-weight embedding model from slprl. mhubert-base-25hz (FP32) weighs 190 MB; the smallest configuration that runs it is RTX 3060 12 GB.

For self-hosting, compare this build's requirements below with the GPU you plan to rent.

  • mhubert-25hz is a 95M parameter feature extraction model developed by SLP-RL and based on the Hubert architecture.
  • It is designed for speech tokenization in spoken language modeling and speaking style conversion tasks.
  • The model supports multilingual input and is released under the MIT license.

Summary of the slprl/mhubert-base-25hz model card, 2026-10-01

What it is

Released byslprl
Released2024-10-24
Parameters95M
VRAM190 MB for the weights

What it runs on

Memory and cards for mhubert-base-25hz (FP32)

190 MBweights, file size
1.1 GBruntime overhead
CardRunsMemory
RTX 3060 12 GBfits11.6 GB
RTX 4060 Ti 16 GBfits15.4 GB
RTX 3090 24 GBfits23.4 GB
RTX 4090 24 GBfits23.4 GB
RTX 5090 32 GBfits31.0 GB
L40S 48 GBfits44.0 GB
A100 80 GBfits78.2 GB
H100 80 GBfits78.1 GB
RTX PRO 6000 Blackwell 96 GBfits93.8 GB
DGX Spark (GB10) 128 GB unifiedfits107 GB
H200 141 GBfits138 GB
B200 180 GBfits176 GB

From the model card

What slprl says about mhubert-25hz

Read the model card

This is a version of Hubert by Meta. This version was introduced in TWIST and showed lots of value as a speech tokeniser for training SpeechLMs.

These model weights were converted by SLP-RL from the original Textlesslib release.

Model Details

Model Description

This Hubert model was introduced in TWIST we encourage you to look there for the full details.

It was trained on a varied mixture of datasets: Multilingual LS, Vox Populi, Common Voice, Spotify, and Fisher. This Hubert base model was trained for 3 iterations with the default 50Hz features rate. For the 4-th iteration, they add an additional convolutional layer at the CNN Encoder with the stride 2, resulting in features of 25Hz.

We converted the original Fairseq release to Huggingface🤗 using the conversion script, after adding support, and asserted that the results are identical.

  • Developed by: Hassid et. al
  • Shared by: SLP-RL
  • Model type: transformers.HubertModel
  • Languages: Multi-lingual
  • License: MIT, see textlesslib license for full details

Model Sources

  • Repository: https://github.com/facebookresearch/textlesslib/tree/main/examples/twist
  • Paper: https://arxiv.org/abs/2305.13009

Uses

This is a base HubertModel and as such is useful as a feature extractor for speech tokenisation for usages such as Spoken Language Modelling or Speaking Style Conversion.

How to Get Started with the Model

This model requires a new version of transformers - transformers>=4.48, so make sure you have it installed. Afterwards it can be used as follows:

from transformers import HubertModel
model = HubertModel.from_pretrained('slprl/mhubert-base-25hz')

Citation

BibTeX:

@article{hassid2024textually,
  title={Textually pretrained speech language models},
  author={Hassid, Michael and Remez, Tal and Nguyen, Tu Anh and Gat, Itai and Conneau, Alexis and Kreuk, Felix and Copet, Jade and Defossez, Alexandre and Synnaeve, Gabriel and Dupoux, Emmanuel and others},
  journal={Advances in Neural Information Processing Systems},
  volume={36},
  year={2024}
}

Model Card Authors

Gallil Maimon

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

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