MOSS

LLMs

MOSS is China's first publicly released conversational large language model, developed by a Fudan University team. It handles dialogue, coding and factual QA, and has been open-sourced after completing the full technical path from language model to conversational AI.

Human verified · 2026-07-21 · Submit a correction

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Editor's note

Best for researchers and developers who want a self-hostable open-source Chinese conversational model; not for general users seeking a polished commercial assistant.

CategoryLLMs

Human verified2026-07-21

What is MOSS

Key features of MOSS

Research training and alignment of Chinese conversational LLMs
Build domain-specific dialogue applications on the open-source model
Run academic experiments in coding assistance and factual QA
Study the full engineering path from beta testing to open-sourcing an LLM

Good for

China's first publicly released conversational LLM, a notable academic milestone
Open-sourced, free to download, study and build upon
Completed the full technical path for generative models to understand human intent and converse

Watch out

Academic project with limited productization and ongoing maintenance
Capability gap versus later commercial models; evaluate from a research perspective
Self-hosting requires considerable compute and engineering skill

How to use MOSS

Visit the MOSS project site at moss.fastnlp.top
Review model capabilities and the open-source license
Obtain the open-source weights and accompanying code
Set up the inference environment and compute resources per the docs
Load the model for dialogue, coding or QA experiments

Who MOSS is for

Difficulty: Advanced

Research training and alignment of Chinese conversational LLMs
Build domain-specific dialogue applications on the open-source model
Run academic experiments in coding assistance and factual QA
Study the full engineering path from beta testing to open-sourcing an LLM

FAQ

Who developed MOSS?

MOSS was developed by a Fudan University team and was the first conversational large language model released in China.

Is MOSS open source?

Yes. The new MOSS model officially launched on April 21 and was announced as open source, free for research and development.

What tasks can MOSS perform?

MOSS handles dialogue generation, coding and factual question answering, having completed the full technical path for generative models to understand human intent.