Is Gemma4-Gutenberg-31B or Qwen3.5-9B smaller?

Qwen3.5-9B is smaller at Q4_K_M: 5.24 GiB against 17.40 GiB.

Which uses less memory at long context?

Qwen3.5-9B — its KV cache at 32K context is 6.2x smaller, because of how its attention layers cache.

Model comparison

Gemma4-Gutenberg-31B vs Qwen3.5-9B

At Q4_K_M, Qwen3.5-9B is the smaller download — 5,627,044,256 bytes against 18,687,065,120. At long context the gap widens: Qwen3.5-9B's KV cache at 32K is 6.2× smaller, which usually matters more than the difference in weights.

From the file· summed bytes, KV per layer

Side by side

	Gemma4-Gutenberg-31B	Qwen3.5-9B
Parameters	31.3B	9.7B
Architecture	gemma4	qwen35
Layers	60	32
Native context	262,144	262,144
Mixture of experts	no	no
Quantizations published	60	34
Smallest quantization	6.67 GiB	2.97 GiB
Q4_K_M	17.40 GiB	5.24 GiB
Licence	apache-2.0	apache-2.0

KV cache by context

the term that decides long-context viability

Context	Gemma4-Gutenberg-31B	Qwen3.5-9B	Ratio
4,096	1.80 GiB	0.13 GiB	14.36×
8,192	2.42 GiB	0.25 GiB	9.68×
16,384	3.67 GiB	0.50 GiB	7.34×
32,768	6.17 GiB	1.00 GiB	6.17×
65,536	11.17 GiB	2.00 GiB	5.59×
131,072	21.17 GiB	4.00 GiB	5.29×