Qwen3.5-4B vs UI-TARS-1.5-7B
Specs, VRAM requirements and download trends — updated 6 August 2026.
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | Qwen3.5-4B | UI-TARS-1.5-7B |
|---|---|---|
| Parameters | 4.7 B | 8.3 B |
| Architecture | Qwen3_5ForConditionalGeneration | Qwen2_5_VLForConditionalGeneration |
| Context length | — | 128,000 |
| Licence | apache-2.0 | apache-2.0 |
| Commercial use | Allowed | Allowed |
| Languages | — | 1 |
| Downloads 30d | 6,725,631 | 909,011 |
| Downloads all time | 34.1 M | 3.3 M |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2026-02-27 | 2025-04-16 |
Download trend
Daily snapshots, last 10 days (28 Jul – 6 Aug)
6.7 M909 K
Qwen3.5-4B
UI-TARS-1.5-7B
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
Qwen3.5-4B · fp16
11.5 GB / 24 GB
UI-TARS-1.5-7B · fp16 @ 125K ctx
56.4 GB / 24 GB