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Learn how Kyutai became the first company to open-source its AI model Moshi, developed for real-time multimodal conversations. Find out how Moshi enhances AI technology with its emotional intelligence, dual audio, and ability to be deployed anywhere.

Kyutai has developed Moshi, the brand-new real-time multimodal artificial intelligence model. This outstanding model provides capabilities beyond the existing OpenAI’s GPT-4o model and thus is revolutionary.

Emotional Understanding:

Moshi can speak and also comprehend feelings. It can speak using different foreign intonations like French and produce two audio channels simultaneously. This feature makes it possible for the assistant to listen and at the same time converse without interruption or loss of chain of textual thoughts.

Advanced Training and Fine-Tuning:

As for fine-tuning, it implemented 100 thousand synthesis conversations by Text-to-Speech (TTS). The Latency of the model was 200ms which was trained on synthetic data. There is a version of Moshi that is significantly smaller so it can run on a MacBook or consumer-like GPU and hence it can be used by anybody.

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Responsible AI Use:

Kyutai, the selected use case, deals with the responsible usage of AI by augmenting an audio detection watermark that can identify AI-generated audio. This feature is, however, under construction, which shows that Kyutai is abreast with this concept and even open to working together on it.

Technical Specifications:

Moshi uses a 7-billion-parameter multimodal language model. It handles the speech input and output using a 2-channel I/ O system and issues tokens of text as well as codecs of speech at the same time. The speech codec at last that has been developed with the use of Kyutai’s Mimi model is capable of achieving a compression factor of 300x.

Rigorous Training Process:

Training Moshi required the finalization of 100,000 detailed features of emotion and style in 100,000 texts. The Text-to-Speech Engine has 70 different emotions and styles, as it was trained on 20 hours of audio by a licensed voice talent Alice. Fine-tuning of Moshi can be accomplished just with under 30 minutes of audio.

Efficient Deployment:

It would appear that Moshi’s demo model which is hosted on Scaleway and Hugging Face can only do two batches at 24 GB VRAM. It can be used with CUDA, Metal, and CPU backends and has moderations in the inference code using Rust. KV has been optimised and there are plans to improve on it by having a prompt cache.

Future Plans:

There are plans to make a technical report and unveil the model versions and the source codes and models which include the inference codebase, Kyutai’s 7B model, the audio codec, and the full stack which has been optimized. Subsequent versions, for example, Moshi 1. 1, 1. 2, and 2. 0 will perfect the model using the feedback that users are likely to provide. Therefore, its goal is permissive licensing to encourage its usage by various parties to develop innovations.


Moshi shows how small, focused teams can make it happen in the AI technology area. It creates new opportunities for discussions about research-related issues, for idea generation, for learning foreign languages, and much more. Being an open-source platform, it encourages people’s participation and creativity and guarantees that the advantages of such a revolutionary innovation will be available to anyone.

Image Credit: Kyutai


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