Is gemma-4-26B-A4B-it or medgemma-27b-it smaller?

medgemma-27b-it is smaller at Q4_K_M: 15.41 GiB against 15.64 GiB.

Which uses less memory at long context?

gemma-4-26B-A4B-it — its KV cache at 32K context is 2.0x smaller, because of how its attention layers cache.

Model comparison

gemma-4-26B-A4B-it vs medgemma-27b-it

At Q4_K_M, medgemma-27b-it is the smaller download — 16,546,689,536 bytes against 16,796,017,248. At long context the gap widens: gemma-4-26B-A4B-it's KV cache at 32K is 2.0× smaller, which usually matters more than the difference in weights.

From the file· summed bytes, KV per layer

Side by side

	gemma-4-26B-A4B-it	medgemma-27b-it
Parameters	26.5B	28.8B
Architecture	gemma4	gemma3
Layers	30	62
Native context	262,144	131,072
Mixture of experts	yes, 128 experts	no
Quantizations published	46	68
Smallest quantization	8.99 GiB	5.83 GiB
Q4_K_M	15.64 GiB	15.41 GiB
Licence	apache-2.0	other

KV cache by context

the term that decides long-context viability

Context	gemma-4-26B-A4B-it	medgemma-27b-it	Ratio
4,096	0.45 GiB	0.92 GiB	2.05×
8,192	0.61 GiB	1.23 GiB	2.04×
16,384	0.92 GiB	1.86 GiB	2.03×
32,768	1.54 GiB	3.11 GiB	2.02×
65,536	2.79 GiB	5.61 GiB	2.01×
131,072	5.29 GiB	10.61 GiB	2.00×