Qwen 3.5 4B
Alibaba · released Mar 2, 2026
| size | 4 B |
| context window | 262,144 tokens |
| longest response | not stated by the maker |
| open weights | yes, license: Apache 2.0 |
| how it ran | run locally on my computer |
| input and output | text, images and video in, text out |
Manufacturer data (model card, announcement), verified Oct 12, 2026.
Where we tested it
From the bottom up
TaskThe model had to answer 28 short questions on logic, space, theory of mind, calibration, and planning a text, each three times.
21 of 28 questions correct in all 3 attempts. It never wrote the 8-word sentence on S or the 10-word sentence ending in “banana”.
You'll find the size band and figures for other models on the Tested models page.