Qwen3.5-9B vs Qwen3.5-4B

Specs, VRAM requirements and download trends — updated 6 August 2026.

Qwen · A
Params
9.7 B
Context
30d
12.4 M
apache-2.0 · commercial OK
Qwen · B
Params
4.7 B
Context
30d
6.7 M
apache-2.0 · commercial OK

Specification comparison

Differences are highlighted; identical values are muted.

Specification Qwen3.5-9B Qwen3.5-4B
Parameters 9.7 B 4.7 B
Architecture Qwen3_5ForConditionalGeneration Qwen3_5ForConditionalGeneration
Context length
Licence apache-2.0 apache-2.0
Commercial use Allowed Allowed
Languages
Downloads 30d 12,403,996 6,725,631
Downloads all time 45.3 M 34.1 M
Quantizations on the Hub SAFETENSORS SAFETENSORS
Gated No No
First seen on the Hub 2026-02-27 2026-02-27

Download trend

Daily snapshots, last 10 days (28 Jul – 6 Aug)

12.4 M6.2 M
Qwen3.5-9B Qwen3.5-4B

VRAM side by side

On RTX 4090 · 24 GB · 8K context unless noted

Qwen3.5-4B · fp16 11.5 GB / 24 GB
✅ Runs comfortably
Qwen3.5-9B · fp16 23.2 GB / 24 GB
⚠️ Tight — reduce context

Adjacent comparisons