mlabonne · vision language

gemma-3-12b-it-abliterated

mlabonne/gemma-3-12b-it-abliterated

gemma-3-12b-it-abliterated at Q4_K_M is exactly 7,300,778,336 bytes (6.80 GiB / 7.30 GB) — an effective 4.792 bits per weight, not the nominal 4. Its KV cache at 32K is 2.47 GiB, not the 12.00 GiB a flat formula predicts.

From the file· summed from 1 file(s)From the file· KV per layer
Parameters
12.2B
Architecture
gemma3
48 layers
Context
131,072
native (config.json)
License
gemma

Shipped quantizations

exact bytes, summed from published files
QuantSizeExact bytesEffective bpwTensorsPublisher
IQ2_XS3.58 GiB3,840,260,8962.521bartowski
IQ2_S3.74 GiB4,020,710,1762.639bartowski
IQ2_M4.01 GiB4,310,461,2162.829bartowski
Q2_K4.44 GiB4,768,221,5363.130matrixportalx
Q2_K4.44 GiB4,768,221,8563.130bartowski
IQ3_XXS4.46 GiB4,784,900,8963.141bartowski
Q2_K_L4.67 GiB5,012,075,2963.290bartowski
IQ3_XS4.85 GiB5,206,166,1763.417bartowski
Q3_K_S5.08 GiB5,458,315,6163.583matrixportalx
Q3_K_S5.08 GiB5,458,315,9363.583bartowski
IQ3_M5.27 GiB5,655,722,6563.712bartowski
Q3_K_M5.60 GiB6,008,818,0163.944matrixportalx
Q3_K_M5.60 GiB6,008,818,3363.944bartowski
Q3_K_L6.04 GiB6,480,185,6964.254matrixportalx
Q3_K_L6.04 GiB6,480,186,0164.254bartowski
IQ4_XS6.10 GiB6,550,964,8964.300bartowski
Q4_06.41 GiB6,887,164,2564.521matrixportalx
IQ4_NL6.41 GiB6,887,164,5764.521bartowski
Q4_06.43 GiB6,909,282,9764.535bartowski
Q4_K_S6.46 GiB6,935,333,2164.553matrixportalx
Q4_K_S6.46 GiB6,935,333,5364.553bartowski
Q4_K_M6.80 GiB7,300,778,3364.792matrixportalx
Q4_K_M6.80 GiB7,300,778,6564.792bartowski
Q4_K_L7.03 GiB7,544,632,0964.952bartowski
Q4_17.04 GiB7,559,563,9364.962bartowski
Q5_07.67 GiB8,231,962,9765.404matrixportalx
Q5_K_S7.67 GiB8,231,962,9765.404matrixportalx
Q5_K_S7.67 GiB8,231,963,2965.404bartowski
Q5_K_M7.87 GiB8,445,036,8965.543matrixportalx
Q5_K_M7.87 GiB8,445,037,2165.543bartowski
Q5_K_L8.09 GiB8,688,890,6565.704bartowski
Q6_K9.00 GiB9,660,811,6166.341matrixportalx
Q6_K9.00 GiB9,660,811,9366.341bartowski
Q6_K_L9.22 GiB9,904,665,3766.502bartowski
Q8_011.65 GiB12,510,212,5768.212matrixportalx
Q8_011.65 GiB12,510,212,8968.212bartowski
BF1621.92 GiB23,540,151,77615.452bartowski
F1621.92 GiB23,540,151,77615.452matrixportalx

KV cache by context

computed per layer — this model uses sliding-window attention
ContextKV cache (f16)Flat formulaOverstated byFull / windowed / recurrent
4,0960.72 GiB1.50 GiB2.09×8 / 40 / 0
8,1920.97 GiB3.00 GiB3.10×8 / 40 / 0
16,3841.47 GiB6.00 GiB4.09×8 / 40 / 0
32,7682.47 GiB12.00 GiB4.86×8 / 40 / 0
65,5364.47 GiB24.00 GiB5.37×8 / 40 / 0
131,0728.47 GiB48.00 GiB5.67×8 / 40 / 0

40 of 48 layers cache only a 1,024-token window rather than the full context, on a period of 6. Figures assume the default configuration; --swa-full disables the saving entirely.

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 6.38 GiB. The real file is 6.80 GiB, because a quantization is a mixture and some tensors are always kept at higher precision. The larger discrepancy is the cache: a flat formula gives 12.00 GiB at 32K context where the real figure is 2.47 GiB, because most of this model's layers cache a fixed window rather than the whole context.

Architecture

from config.json
Layers
48
Attention heads
16
KV heads
8
Head dim
256
Hidden size
3840
Vocab
262,208
Sliding window
1024
SWA period
6
MLA
no
Experts
Experts per token
use_sliding_window

Questions people ask

How much VRAM does gemma-3-12b-it-abliterated need?
Q4_K_M is exactly 7,300,778,336 bytes (6.80 GiB) in weights. Add the KV cache, which depends on your context length, plus roughly half a gigabyte of runtime overhead.
How large is gemma-3-12b-it-abliterated's KV cache?
2.47 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.
Which quantization of gemma-3-12b-it-abliterated 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.