Is Qwen3.5-9B or Qwopus3.6-35B-A3B-v1 smaller?

Qwen3.5-9B is smaller at Q4_K_M: 5.24 GiB against 20.22 GiB.

Which uses less memory at long context?

Qwopus3.6-35B-A3B-v1 — its KV cache at 32K context is 1.6x smaller, because of how its attention layers cache.

Model comparison

Qwen3.5-9B vs Qwopus3.6-35B-A3B-v1

At Q4_K_M, Qwen3.5-9B is the smaller download — 5,627,044,256 bytes against 21,713,462,432. At long context the gap widens: Qwopus3.6-35B-A3B-v1's KV cache at 32K is 1.6× smaller, which usually matters more than the difference in weights.

From the file· summed bytes, KV per layer

Side by side

	Qwen3.5-9B	Qwopus3.6-35B-A3B-v1
Parameters	9.7B	36.0B
Architecture	qwen35	clip
Layers	32	40
Native context	262,144	262,144
Mixture of experts	no	yes, 256 experts
Quantizations published	34	29
Smallest quantization	2.97 GiB	6.97 GiB
Q4_K_M	5.24 GiB	20.22 GiB
Licence	apache-2.0	apache-2.0

KV cache by context

the term that decides long-context viability

Context	Qwen3.5-9B	Qwopus3.6-35B-A3B-v1	Ratio
4,096	0.13 GiB	0.08 GiB	1.60×
8,192	0.25 GiB	0.16 GiB	1.60×
16,384	0.50 GiB	0.31 GiB	1.60×
32,768	1.00 GiB	0.63 GiB	1.60×
65,536	2.00 GiB	1.25 GiB	1.60×
131,072	4.00 GiB	2.50 GiB	1.60×