vLLM Announces Day-0 Support for Kimi K3: Run 2.8T MoE on 8 B300 GPUs

vllm_project · x · 2026-07-30

vLLM officially announced efficient Day-0 production support for Moonshot AI's open-weight Kimi K3 model. Kimi K3 is a 2.8-trillion-parameter Mixture-of-Experts (MoE) model with 16 active experts per token, featuring a 1M-token context window and native vision capabilities.

The post provides a detailed deployment guide, noting that the easiest way to run the model is using 8 NVIDIA B300 GPUs or 8 AMD MI355X GPUs. Additionally, Inferact has trained and open-sourced a DSpark speculative decoder specifically for Kimi K3, which can be enabled via specific serve arguments to boost inference speed. Baseten has also launched a fast API service powered by vLLM, allowing users to leverage the model without managing infrastructure.

Related event: Kimi K3 Open-Sourced with Day-0 Native Support from vLLM and AMD(11 posts)→

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