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Tini-Cybersec-8B-A1B

iselabvn/Tini-Cybersec-8B-A1B

Tini-Cybersec-8B-A1B at Q4_K_M is exactly 5,155,566,848 bytes (4.80 GiB / 5.16 GB) — an effective 4.871 bits per weight, not the nominal 4. Its KV cache at 32K is 0.38 GiB.

From the file· summed from 1 file(s)From the file· KV per layer
Parameters
8.5B
total, not active
Architecture
lfm2moe
24 layers
Context
128,000
native (config.json)
License
apache-2.0

Shipped quantizations

exact bytes, summed from published files
QuantSizeExact bytesEffective bpwTensorsPublisher
IQ2_M2.71 GiB2,912,515,1682.752bartowski
Q2_K2.85 GiB3,063,379,0402.894bartowski
Q2_K_L2.91 GiB3,126,867,0402.954bartowski
Q2_K2.97 GiB3,190,437,1203.014mradermacher
IQ3_XXS3.32 GiB3,563,467,8723.367bartowski
Q3_K_S3.50 GiB3,755,078,9123.548mradermacher
Q3_K_S3.51 GiB3,769,660,5123.561bartowski
IQ3_XS3.66 GiB3,925,636,1923.709bartowski
Q3_K_M3.66 GiB3,931,370,5923.714bartowski
Q3_K_L3.80 GiB4,076,663,9043.851bartowski
IQ3_M3.80 GiB4,079,481,9523.854bartowski
Q3_K_M3.83 GiB4,108,399,8723.881mradermacher
Q3_K_L4.13 GiB4,436,866,3044.192mradermacher
IQ4_XS4.29 GiB4,601,345,1204.347bartowski
IQ4_XS4.29 GiB4,611,241,2164.356mradermacher
IQ4_NL4.52 GiB4,856,280,1604.588bartowski
Q4_K_S4.53 GiB4,863,554,8164.595mradermacher
Q4_04.54 GiB4,869,649,5044.601bartowski
Q4_K_S4.66 GiB5,003,605,0884.727bartowski
Q4_K_M4.80 GiB5,155,566,8484.871mradermacher
Q4_K_M4.81 GiB5,166,625,8884.881bartowski
Q4_K_L4.87 GiB5,230,113,8884.941bartowski
Q4_15.00 GiB5,364,577,3765.068bartowski
Q5_K_S5.47 GiB5,870,187,7765.546mradermacher
Q5_K_S5.47 GiB5,876,020,3205.551bartowski
Q5_K_M5.62 GiB6,030,341,3765.697mradermacher
Q5_K_M5.62 GiB6,039,237,7285.706bartowski
Q5_K_L5.68 GiB6,102,725,7285.766bartowski
Q6_K6.48 GiB6,959,789,3126.575mradermacher
Q6_K6.76 GiB7,255,389,2806.854bartowski
Q6_K_L6.82 GiB7,318,877,2806.915bartowski
Q8_08.39 GiB9,010,197,6008.512bartowski
Q8_08.39 GiB9,010,197,7608.512mradermacher
BF1615.78 GiB16,947,262,27216.011bartowski
F1615.78 GiB16,947,262,72016.011mradermacher

KV cache by context

computed per layer
ContextKV cache (f16)Flat formulaOverstated byFull / windowed / recurrent
4,0960.05 GiB0.19 GiB4.00×6 / 0 / 18
8,1920.09 GiB0.38 GiB4.00×6 / 0 / 18
16,3840.19 GiB0.75 GiB4.00×6 / 0 / 18
32,7680.38 GiB1.50 GiB4.00×6 / 0 / 18
65,5360.75 GiB3.00 GiB4.00×6 / 0 / 18
131,0721.50 GiB6.00 GiB4.00×6 / 0 / 18

18 of 24 layers use linear attention, which keeps a fixed-size recurrent state instead of a per-token cache. Those layers do not grow with context at all — treating them as ordinary attention, as a flat formula does, overstates this model's cache by roughly 4.0× at long context.

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 4.44 GiB. The real file is 4.80 GiB, because a quantization is a mixture and some tensors are always kept at higher precision.

Architecture

from config.json
Layers
24
Attention heads
32
KV heads
8
Head dim
64
Hidden size
2048
Vocab
128,000
Sliding window
none
SWA period
MLA
no
Experts
32
Experts per token
4
use_sliding_window

Questions people ask

How much VRAM does Tini-Cybersec-8B-A1B need?
Q4_K_M is exactly 5,155,566,848 bytes (4.80 GiB) in weights. Add the KV cache, which depends on your context length, plus roughly half a gigabyte of runtime overhead.
How large is Tini-Cybersec-8B-A1B's KV cache?
0.38 GiB at 32K context with an f16 cache, computed per layer. Quantizing the cache to q8_0 roughly halves it, which is often the difference between a context length fitting and not.
Is Tini-Cybersec-8B-A1B a mixture-of-experts model?
Yes — 32 experts, 4 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 Tini-Cybersec-8B-A1B 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.