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moonshotai / kimi_linear

Kimi-K3

2.8T total · 104B active parameters.

Moonshot's official card declares 2.8T total parameters and 104B active parameters per token. The U8 safetensors total is retained as source metadata but is not shown as a falsely precise logical count. Open the official parameter note ↗

Open in the calculator →

Architecturepublished data
Quick answer
Kimi-K3 needs about 1720.4 GB at Q4_K_M — the format most people download — with 8,192 tokens of context. None of the 18 common devices listed below holds it entirely at this setting. No hardware for it? Rent a GPU that runs it, priced live.

Sized at 8,192 tokens of context with the whole model in device memory, across 18 common devices. Speeds are estimates, not benchmarks.

Weight-file size by format

FormatSizeRangeBasis
FP165602.4 GB3920.0 GB – 5656.1 GBsize range
Q8_02977.4 GB2082.5 GB – 3007.0 GBsize range
Q6_K2299.5 GB1607.8 GB – 2322.7 GBsize range
Q5_K_M2000.3 GB1347.5 GB – 2322.7 GBsize range
Q5_01954.0 GB1347.5 GB – 2322.7 GBsize range
Q4_K_M1718.8 GB1102.5 GB – 2322.7 GBsize range
Q4_01629.3 GB1102.5 GB – 2322.7 GBsize range
Q3_K_M1400.3 GB842.2 GB – 2322.7 GBsize range
Q2_K1108.8 GB643.1 GB – 2322.7 GBsize range

A file size is not the memory a run needs: the KV cache and the runtime reserve come on top, and the calculator adds both.

What the labels mean
published data
Read from a published source — a file's byte count, a model's configuration or a manufacturer's specification — or exact arithmetic on such values. Not a measurement on a machine.
reconstructed size
Weight size reconstructed from the pinned architecture, because no published file exists.
size range
Only a lower and an upper bound are claimed for this weight size.

Hardware ladder

Q4_K_M at 8,192 tokens · 0 of 18 devices hold it entirely
DeviceMemoryVerdictDecodeCalculator
NVIDIA GeForce RTX 50701720.4 GB of 12 GB93 layers on system RAM<0.1 tok/s with offloadOpen →
AMD Radeon™ RX 9070 XT1720.4 GB of 16 GB93 layers on system RAM<0.1 tok/s with offloadOpen →
NVIDIA GeForce RTX 40801720.4 GB of 16 GB93 layers on system RAM<0.1 tok/s with offloadOpen →
NVIDIA GeForce RTX 50801720.4 GB of 16 GB93 layers on system RAM<0.1 tok/s with offloadOpen →
NVIDIA GeForce RTX 5070 Ti1720.4 GB of 16 GB93 layers on system RAM<0.1 tok/s with offloadOpen →
NVIDIA GeForce RTX 5060 Ti 16GB1720.4 GB of 16 GB93 layers on system RAM<0.1 tok/s with offloadOpen →
NVIDIA GeForce RTX 40901720.4 GB of 24 GB92 layers on system RAM<0.1 tok/s with offloadOpen →
AMD Radeon™ RX 7900 XTX1720.4 GB of 24 GB92 layers on system RAM<0.1 tok/s with offloadOpen →
NVIDIA GeForce RTX 30901720.4 GB of 24 GB92 layers on system RAM<0.1 tok/s with offloadOpen →
NVIDIA GeForce RTX 50901720.4 GB of 32 GB92 layers on system RAM<0.1 tok/s with offloadOpen →
NVIDIA RTX 6000 Ada Generation1720.4 GB of 48 GB91 layers on system RAM<0.1 tok/s with offloadOpen →
Apple M4 Pro1720.4 GB of 64 GBdoes not fitnot calibratedOpen →
Apple M5 Pro1720.4 GB of 64 GBdoes not fitnot calibratedOpen →
AMD Ryzen AI Max+ 395 with Radeon 8060S1720.4 GB of 128 GBdoes not fitnot calibratedOpen →
Apple M3 Max1720.4 GB of 128 GBdoes not fitnot calibratedOpen →
Apple M4 Max1720.4 GB of 128 GBdoes not fitnot calibratedOpen →
NVIDIA DGX Spark1720.4 GB of 128 GBdoes not fitnot calibratedOpen →
Apple M2 Ultra1720.4 GB of 192 GBdoes not fitnot calibratedOpen →

Decode is a calibrated estimate from the published calibration; capacity is the manufacturer's published ceiling, not guaranteed free memory. Fitting in memory is not the same as loading: whether the runtime and version you have supports this architecture and format on that machine has not been tested here. Offloaded rows assume there is enough system RAM for the overflow — the calculator checks that against the RAM you declare. Each “Open” link keeps this model, format and context.

Run it in the cloud

Rent a GPU that runs Kimi-K3

Every rentable machine that holds the whole model, from Vast.ai and RunPod, with this site's speed estimate for each and the provider's own price, read live. Cheapest first; sort by cost per token or speed instead, or switch the format.

Prices · 18:30 UTC, 22 Sept

The machines that hold Kimi-K3 at Q4_K_M are not in stock at Vast.ai or RunPod right now.

No GPU at all

Use Kimi-K3 by the token

Nothing to set up and nothing to switch off: you pay only for the tokens you use.

Every machine holds the whole model at Q4_K_M and 8,192 tokens of context, no offload. Speeds are this site’s single-stream decode estimates; prices are what each provider’s own API quoted, on-demand, for the whole machine. Vast hosts below 98% measured reliability are left out.

Referral links Vast.ai, RunPod and Novita pay us a share of what you spend if you sign up through these buttons. It costs you nothing, and it never decides an order or a recommendation: both are computed from the live price and the speed, and options that pay us nothing are listed and recommended on the same terms. How we rank

Buying a card instead, or paying by the token? Compare a year of Kimi-K3 three ways →

Under the hood

Architecture, read from the publisher’s file

The numbers every figure above is computed from, with the file they came from.

Architecture

✓ Architecture read from the published config.json

Retrieved 2026-09-01 at pinned commit a590ce090cb0; the native packed/fused checkpoint metadata is not used as a logical parameter total.

Architecture
kimi_linear
Layers
93
Hidden size
7,168
Attention heads
96
KV heads
96
Feed-forward width
33,792
Vocabulary
163,840
Context ceiling
1,048,576
Experts
896
Experts / token
16
Expert width
3,072
Shared experts
2
Latent KV rank
512

Kimi-K3, card by card

More from moonshotai

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curl -s https://llmbottleneck.com/v1/analyze \
  -H "Authorization: Bearer $LLMB_KEY" -H "content-type: application/json" \
  -d '{"model":"moonshotai-kimi-k3","quantization":"Q4_K_M","context":8192,"hardware":"nvidia-geforce-rtx-4090"}'

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<script src="https://llmbottleneck.com/widget.js"
  data-model="moonshotai-kimi-k3" data-quantization="Q4_K_M"
  data-hardware="nvidia-geforce-rtx-4090" data-context="8192"></script>

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Citing this page

LLM Bottleneck. “Kimi-K3 VRAM and hardware requirements.” Architecture from moonshotai/Kimi-K3 at revision a590ce090cb0, retrieved 2026-09-01. https://llmbottleneck.com/models/moonshotai-kimi-k3

Every figure above is either the published value or a reconstruction whose measured error is on the accuracy page.

llmbottleneck
catalogue 2026-10-03models 327devices 135