Model reference · open weights

Kimi-K3

Embeddings moonshotai Embeddings 1 build Open weights 2k dl/mo

Kimi-K3 is an open-weight embedding model from moonshotai. Kimi-K3-NVFP4 (NVFP4) weighs 1646 GB; it needs more than the reference configurations below.

For self-hosting, compare this build's requirements below with the GPU you plan to rent.

  • Kimi-K3 is a 1588.7B parameter feature-extraction model developed by moonshotai and published by RedHatAI as an NVFP4 quantized version.
  • It supports a context length of 1048576 tokens and accepts text and image inputs to produce text outputs.
  • The model uses an MIT licence and reduces GPU memory requirements for MoE layers by approximately 75% through FP4 quantization.

Summary of the RedHatAI/Kimi-K3-NVFP4 model card, 2026-10-01

What it is

Released bymoonshotai
Released2026-07-30
Parameters1588.7B
VRAM1646 GB for the weights

What it runs on

Memory and cards for Kimi-K3-NVFP4 (NVFP4)

1646 GBweights, file size
1.1 GBruntime overhead
CardRunsMemory
RTX 3060 12 GB … B200 180 GBdoes not fit

From the model card

What moonshotai says about Kimi-K3

Read the model card

This is a quantized version of moonshotai/Kimi-K3 with MoE layers quantized to NVFP4 for accelerated inference.

Usage

This model is intended for deployment with vLLM. You can serve the model using

vllm serve RedHatAI/Kimi-K3-NVFP4 \
  --tensor-parallel-size 8 \
  --trust_remote_code \
  --load-format instanttensor \
  --reasoning-parser kimi_k3 \
  --language-model-only  # optional

May require https://github.com/vllm-project/vllm/pull/50500 to run

Creation Process

This model was compressed using LLM Compressor. For more information, please contact Kyle Sayers via the vLLM Developers Slack or ksayers@redhat.com.

Evaluation

Benchmarkmoonshotai/Kimi-K3RedHatAI/Kimi-K3-NVFP4
GPQA93.591.0
inspect eval hf/Idavidrein/gpqa/diamond \
  --model vllm/RedHatAI/Kimi-K3-NVFP4 \
  --reasoning-effort high \
  --model-base-url http://localhost:8000/v1

Benchmarking

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

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