meta-llama · vision language · mixture of experts

Llama-4-Scout-17B-16E-Instruct

meta-llama/Llama-4-Scout-17B-16E-Instruct

Llama-4-Scout-17B-16E-Instruct at Q4_K_M is exactly 65,359,900,352 bytes (60.87 GiB / 65.36 GB) — an effective 4.813 bits per weight, not the nominal 4.

From the file· summed from 2 file(s)From the file· KV from mirror (mirror:unsloth/Llama-4-Scout-17B-16E-Instruct)
Parameters
109B
total, not active
Architecture
llama4
48 layers
Context
10,485,760
native (config.json)
License
other

Shipped quantizations

exact bytes, summed from published files
QuantSizeExact bytesEffective bpwTensorsPublisher
IQ1_M24.51 GiB26,318,067,2001.938bartowski
UD-TQ1_027.25 GiB29,261,483,5202.155unsloth
IQ2_XXS28.09 GiB30,165,685,7602.221bartowski
UD-IQ1_S30.24 GiB32,470,126,0802.391unsloth
IQ2_XS30.68 GiB32,941,790,7202.426bartowski
IQ2_S31.98 GiB34,336,604,1602.528bartowski
UD-IQ1_M32.59 GiB34,988,428,8002.576unsloth
IQ2_M34.56 GiB37,112,709,1202.733bartowski
UD-IQ2_XXS34.83 GiB37,400,972,8002.754unsloth
UD-IQ2_M36.39 GiB39,078,694,4002.878unsloth
Q2_K36.85 GiB39,563,317,7602.913unsloth
Q2_K_L37.07 GiB39,805,775,3602.931unsloth
Q2_K40.03 GiB42,986,260,4803.165bartowski
Q2_K_L40.97 GiB43,996,500,4803.240bartowski
IQ3_XXS41.87 GiB44,955,402,2403.310bartowski
UD-IQ3_XXS42.59 GiB45,725,847,0403.367unsloth
Q3_K_S43.53 GiB46,740,372,4803.442unsloth
IQ3_XS44.19 GiB47,452,090,8803.494bartowski
Q3_K_S46.34 GiB49,754,370,5603.664bartowski
IQ3_M2 shards46.87 GiB50,322,567,8723.706bartowski
Q3_K_M2 shards48.20 GiB51,755,187,3923.811unsloth
Q3_K_M2 shards50.59 GiB54,318,953,1844.000bartowski
IQ4_XS2 shards53.69 GiB57,651,883,7124.245unsloth
Q3_K_L2 shards53.83 GiB57,799,569,8244.256lmstudio-community
Q3_K_L2 shards53.83 GiB57,799,570,1124.256bartowski
IQ4_XS2 shards55.78 GiB59,892,341,9844.410bartowski
IQ4_NL2 shards56.76 GiB60,947,033,7924.488unsloth
Q4_02 shards56.98 GiB61,182,963,3924.505unsloth
Q4_K_S2 shards57.23 GiB61,452,971,7124.525unsloth
IQ4_NL2 shards58.67 GiB62,991,754,4644.638bartowski
Q4_02 shards58.72 GiB63,054,669,0244.643bartowski
Q4_K_M2 shards60.87 GiB65,359,900,3524.813unsloth
Q4_K_M2 shards62.91 GiB67,546,178,4644.974lmstudio-community
Q4_K_M2 shards62.91 GiB67,546,178,7844.974bartowski
Q4_12 shards62.94 GiB67,586,260,6724.977unsloth
Q4_K_L2 shards63.62 GiB68,313,961,1525.030bartowski
Q4_12 shards64.35 GiB69,096,207,5525.088bartowski
Q5_K_S2 shards69.16 GiB74,256,944,8325.468unsloth
Q5_K_M2 shards71.29 GiB76,546,444,9925.637unsloth
Q5_K_L2 shards73.87 GiB79,316,144,8645.841bartowski

KV cache by context

unresolved

This model declares a 8,192-token sliding window, but we could not establish which layers use it. Its architecture publishes the layout as a per-layer array inside the model file rather than as a period in config.json, and we have not yet ingested that array.

A flat context × layers × heads figure would be substantially too high, so we are not showing one. This is tracked as a known gap rather than filled with a guess.

Compare with

same modality, comparable size

Will it run on your card?

full quant x context sweep

Why other calculators give a different number

A parameters × bits ÷ 8 estimate puts Q4_K_M at roughly 56.91 GiB. The real file is 60.87 GiB, because a quantization is a mixture and some tensors are always kept at higher precision.

Architecture

from mirror:unsloth/Llama-4-Scout-17B-16E-Instruct
Layers
48
Attention heads
40
KV heads
8
Head dim
128
Hidden size
5120
Vocab
202,048
Sliding window
8192
SWA period
MLA
no
Experts
16
Experts per token
1
use_sliding_window

Questions people ask

How much VRAM does Llama-4-Scout-17B-16E-Instruct need?
Q4_K_M is exactly 65,359,900,352 bytes (60.87 GiB) in weights. Add the KV cache, which depends on your context length, plus roughly half a gigabyte of runtime overhead.
Is Llama-4-Scout-17B-16E-Instruct a mixture-of-experts model?
Yes — 16 experts, 1 routed per token. Every expert must be resident, but only the routed ones are read per token, which is why its memory requirement and its speed behave very differently.
Which quantization of Llama-4-Scout-17B-16E-Instruct should I use?
Q4_K_M is the usual default. Pick the largest quantization that fits your card at the context you actually need — the table above gives exact sizes for every one published.