Kimi K3 icon

Kimi K3

AMD
Kimi K3 is a frontier-scale native multimodal Mixture-of-Experts model designed for long-horizon reasoning, agentic coding, and large-scale knowledge workflows. It is the world's first open 3T-class model, featuring 2.8T total parameters with 104B activated, built on a 93-layer architecture with Kimi Delta Attention (KDA), Gated MLA, and Stable LatentMoE. The model uses a 7,168 hidden size, 96 attention heads, and 896 routed experts, activating 16 experts per token alongside 2 shared experts. Powered by MoonViT-V2 for native vision understanding and supporting a 1M-token context window, Kimi K3 is optimized for multimodal reasoning, long-context coding, advanced agentic workflows, and frontier-scale research applications
TypeVision-Language Model
CapabilitiesText Generation, Instruction Following, Reasoning, Mathematical Reasoning+6 more
Release Date27 July, 2026
Links
LicenseKimi-K3

Inference Instructions

Deploy and run this model on AMD MI355X GPUs using the command below. Copy the command to get started with inference.

CONSOLE
docker run -it --rm \
 --device=/dev/kfd 
 --privileged 
 --device=/dev/dri 
 --group-add video 
 --security-opt seccomp=unconfined 
 --security-opt apparmor=unconfined 
 --cap-add=SYS_PTRACE 
 --ipc=host 
 --shm-size=128g 
 -p 8000:8000 
 -v ~/.cache/huggingface:/root/.cache/huggingface 
 -e NCCL_MIN_NCHANNELS=112 
 -e TORCH_NCCL_HIGH_PRIORITY=1 
 -e HIP_FORCE_DEV_KERNARG=1 
 -e TORCH_BLAS_PREFER_HIPBLASLT=1 
 -e VLLM_ROCM_USE_AITER=1 
 -e AITER_SITUV2_A8W4=1 
 -e VLLM_ROCM_USE_AITER_RMSNORM=0 
 -e VLLM_USE_BREAKABLE_CUDAGRAPH=0 
 -e AITER_BF16_FP8_MOE_BOUND=0 
 -e SAFETENSORS_FAST_GPU=1 
 -e HF_TOKEN='YOUR_HF_TOKEN' 
 vllm/vllm-openai-rocm:kimi-k3 
 moonshotai/Kimi-K3 
 --port 8000 
 --host 0.0.0.0 
 --tensor-parallel-size 8 
 --moe-backend auto 
 --load-format auto 
 --mm-encoder-tp-mode data 
 --max-model-len auto 
 --max-num-seqs 1024 
 --enable-auto-tool-choice 
 --tool-call-parser kimi_k3 
 --reasoning-parser kimi_k3 
 --gpu-memory-utilization 0.90 
 --trust-remote-code
Note

Requires the vllm/vllm-openai-rocm:kimi-k3 Docker image or a standard vLLM image version greater than v0.26.0.

Model Benchmarks

Each model was tested with a fixed input size and total token volume while increasing concurrency to measure serving performance under load.

ITL vs Concurrency

Time to First Token

Throughput Scaling

Total Tokens/sec vs Avg TTFT

Vultr Cloud GPU

AMD Instinct MI355X

Deploy AMD MI355X on Vultr Cloud GPU