AI · AI today, November 5, 2026
Models
Moonshot AI releases Kimi K3.1 Pro, a 2.8-trillion-parameter open model
· Aster editorial team
AI-generated imageThe Chinese company posted the weights of Kimi K3.1 Pro on Hugging Face. It understands text and images and is built for agent tasks such as coding and research. It’s a “mixture of experts”: of its 2.8 trillion parameters, it uses only about 104 billion at each step, and it can read around a million tokens at once.
Why it matters
It’s one of the largest models anyone can download, though running it takes a huge amount of hardware. It ships under its own license rather than a standard open one, so read it before using it in a business.
For the technical crowd
896 experts, 16 active per token, 93 layers and MXFP4 weights. In the company’s own benchmarks it lands close to the top models: ahead on some and behind on others.
· Source: Hugging Face
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