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---
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license: apple-amlr
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language:
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- en
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metrics:
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- wer
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pipeline_tag: automatic-speech-recognition
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tags:
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- asr
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- mixture-of-experts
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- speech
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- streaming
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---
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# Model Card for Model ID
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Omni-router Transformer is a new Mixture-of-Experts (MoE) architecture that explicitly couples routing across layers using a shared router to learn strong and specialized experts. Omni-router's routing decisions appear to form consistent temporal segments and strutured usage across model depth, suggesting meaningful coordination between layers.
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## Model Details
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### Model Description
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This ASR model is a 4-expert MoE model (total 613M with 200M activate parameters). The model is streaming which transcribes speech conditioned only on
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- **Developed by:** Apple Machine Learning Research
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- **Model type:** ASR
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- **Language(s):** English
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- **License:** apple-amlr
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## Uses
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This model is a speech recognition model.
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## How to Get Started with the Model
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Please refer to the github
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## Training Details
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### Training Data
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<!-- This should link to a Dataset Card, perhaps with a short stub of information on what the training data is all about as well as documentation related to data pre-processing or additional filtering. -->
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## Citation
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<!-- If there is a paper or blog post introducing the model, the APA and Bibtex information for that should go in this section. -->
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If you find this work useful, please cite our paper:
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```
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@article{gu2025omnirouter,
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title={Omni-router: Sharing Routing Decisions in Sparse Mixture-of-Experts for Speech Recognition},
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author={Gu, Zijin and Likhomanenko, Tatiana and Jaitly, Navdeep},
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journal={arXiv preprint arXiv:2507.05724},
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year={2025}
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}
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```
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## Model Card Contact
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Contact zijin@apple.com for any issues.
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---
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license: apple-amlr
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language:
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- en
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metrics:
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- wer
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pipeline_tag: automatic-speech-recognition
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tags:
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- asr
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- mixture-of-experts
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- speech
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- streaming
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---
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# Model Card for Model ID
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Omni-router Transformer is a new Mixture-of-Experts (MoE) architecture that explicitly couples routing across layers using a shared router to learn strong and specialized experts. Omni-router's routing decisions appear to form consistent temporal segments and strutured usage across model depth, suggesting meaningful coordination between layers.
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Please refer to the [paper](https://arxiv.org/abs/2507.05724) for details.
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## Model Details
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### Model Description
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This ASR model is a 4-expert MoE model (total 613M with 200M activate parameters). The model is streaming which transcribes speech conditioned only on past and current speech.
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- **Developed by:** Apple Machine Learning Research
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- **Model type:** ASR
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- **Language(s):** English
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- **License:** apple-amlr
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## Uses
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This model is a speech recognition model.
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## How to Get Started with the Model
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Please refer to the [github](https://github.com/apple/ml-omni-router-moe-asr) page for detailed usage.
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## Training Details
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### Training Data
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<!-- This should link to a Dataset Card, perhaps with a short stub of information on what the training data is all about as well as documentation related to data pre-processing or additional filtering. -->
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The training data is a large-scale conversational audio dataset collected from publicly accessible sources, named SpeechCrawl. Please refer to the [paper](https://arxiv.org/abs/2507.05724) for details.
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## Citation
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<!-- If there is a paper or blog post introducing the model, the APA and Bibtex information for that should go in this section. -->
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+
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If you find this work useful, please cite our paper:
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```
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@article{gu2025omnirouter,
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title={Omni-router: Sharing Routing Decisions in Sparse Mixture-of-Experts for Speech Recognition},
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author={Gu, Zijin and Likhomanenko, Tatiana and Jaitly, Navdeep},
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journal={arXiv preprint arXiv:2507.05724},
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year={2025}
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}
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```
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## Model Card Contact
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Contact zijin@apple.com for any issues.
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