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Moonshot AI - Mixture of experts - verified

Run Kimi K3 locally

Kimi K3 is a 2.78T mixture-of-experts (104B active) model from Moonshot AI with a 1.05M-token context window, released under Kimi K3 License (commercial use is allowed with conditions set out in the license); the smallest listed download is 1,508.7 GB, the UD-Q4_K_XL GGUF build from unsloth/Kimi-K3-GGUF.

Official weights: moonshotai/Kimi-K3 - modalities: text, image, video

Total params
2.78T
Active params
104B
Context
1.05M
Smallest download
1,508.7 GB

Fits in

Smallest download at most 85% of memory

None of the tiers here. The smallest listed download is 1,508.7 GB, more than 85% of 256 GB.

Downloads

The official weights and every quantization listed for this model, with file sizes from Hugging Face.

Kimi K3 downloads and file sizes
DownloadFormatSizeRepo
Official weightsMXFP41,560.9 GBmoonshotai/Kimi-K3
UD-Q4_K_XLSmallest listedGGUF1,508.7 GBunsloth/Kimi-K3-GGUF
UD-Q8_K_XLGGUF1,561.2 GBunsloth/Kimi-K3-GGUF

GB is decimal: 1 GB = 10^9 bytes. Add memory for the context and the operating system on top of the file size.

Run it

The official pages read for this directory publish no copyable run command for Kimi K3. Download the weights from moonshotai/Kimi-K3 and follow the model card's serving instructions.

Not sure which runtime to use? Compare local LLM runtimes by platform, API and features.

License

License
Kimi K3 Licenseother
Commercial use
Commercial use: ConditionsCommercial use is allowed with conditions set out in the license.
Gated download
No. The files download directly.

Worth knowing

Ships MXFP4 weights with MXFP8 activations, always thinks, and the license requires a separate agreement for model-as-a-service providers above 20 million USD over 12 months.

Released (Hugging Face repo creation date).

API pricing and specsHosted prices per 1M tokens for Kimi K3, if you would rather not run it yourself.

FAQ

How big is the Kimi K3 download?

The official MXFP4 weights in moonshotai/Kimi-K3 are 1,560.9 GB. The smallest listed download is 1,508.7 GB, the UD-Q4_K_XL GGUF build from unsloth/Kimi-K3-GGUF. Plan for more memory than the file size: the context (KV cache) and the operating system need room too.

Can I use Kimi K3 commercially?

Kimi K3 is released under Kimi K3 License, and commercial use is allowed with conditions set out in the license. The license text is at https://huggingface.co/moonshotai/Kimi-K3/blob/main/LICENSE.

How much memory do I need for Kimi K3?

Its smallest listed download is 1,508.7 GB, more than 85% of 256 GB, so it needs a multi-GPU server or a machine with more memory than the largest tier here.

What is the context length of Kimi K3?

1,048,576 tokens. A longer context needs more memory for the KV cache, so you can run with a shorter one when memory is tight.

Sources

Last verified from the pages below.

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