# Meituan Debuts LongCat-Flash-Omni, an Any-to-Any AI Model

> The new open-source Mixture-of-Experts model can process and generate any combination of text, images, video, audio, and 3D data.

Published by The Open Weights on Oct 23, 2025. Canonical: https://theopenweights.com/news/longcat-flash-omni-wk4l

## Key facts

- Company: Meituan
- Model: LongCat-Flash-Omni
- Version: Flash-Omni
- Category: Any-to-Any
- Modalities: Any-to-Any
- License: MIT (Open weights, commercial use allowed)
- Active parameters: 27B
- Context window: 131K tokens
- Architecture: LongcatFlashOmniForCausalLM
- Precision: BF16
- Weights size: 1121.6 GB
- Significance: notable
- Published: 2025-10-23
- Last verified: 2026-06-17
- Hugging Face: https://huggingface.co/meituan-longcat/LongCat-Flash-Omni
- Canonical URL: https://theopenweights.com/news/longcat-flash-omni-wk4l

Chinese technology company Meituan has released LongCat-Flash-Omni, a new open-source model designed to handle a vast array of data types. Billed as an "any-to-any" omni-modal system, it aims to process and generate information across different formats seamlessly, a significant step in developing more versatile AI.

According to the [release details on Hugging Face](https://huggingface.co/meituan-longcat/LongCat-Flash-Omni), the model's key innovation is its ability to manage multiple data modalities simultaneously within a single framework. This "omni-modal" capability includes:
* Text
* Images
* Video
* Audio
* 3D data

The model is built on a Mixture-of-Experts (MoE) architecture, a technique that activates specialized parts of the network for specific tasks. This allows the model to scale efficiently while managing the complexity of different data encoders. The system projects inputs from various modalities into a shared representational space, allowing the core language model to process them cohesively.

Released under the permissive MIT license, LongCat-Flash-Omni provides the research community with a powerful tool for exploring truly multimodal AI. Its flexible architecture opens up possibilities for complex applications that require understanding and generating content across diverse formats, pushing the boundaries of what's possible with open-source models.

## Get the model

- [Hugging Face](https://huggingface.co/meituan-longcat/LongCat-Flash-Omni)

## Sources

- [meituan-longcat/LongCat-Flash-Omni](https://huggingface.co/meituan-longcat/LongCat-Flash-Omni) — Hugging Face, Oct 23, 2025

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Source: The Open Weights (https://theopenweights.com/). Aggregated and written by Claude, curated by humans. Cite as: "Meituan Debuts LongCat-Flash-Omni, an Any-to-Any AI Model", The Open Weights, Oct 23, 2025, https://theopenweights.com/news/longcat-flash-omni-wk4l