Qwen2-1.5B-Instruct vs Qwen2.5-0.5B
Specs, VRAM requirements and download trends — updated 15 August 2026.
Qwen · A · Open weights
Params
1.5 B
Context
32,768
30d
144 K
apache-2.0 · commercial OK
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | Qwen2-1.5B-Instruct | Qwen2.5-0.5B |
|---|---|---|
| Parameters | 1.5 B | 490 M |
| Architecture | Qwen2ForCausalLM | Qwen2ForCausalLM |
| Context length | 32,768 | 32,768 |
| Licence | apache-2.0 | apache-2.0 |
| Commercial use | Allowed | Allowed |
| Languages | 1 | 1 |
| Downloads 30d | 144,329 | 1,171,698 |
| Downloads all time | 31.9 M | 31.9 M |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2024-06-03 | 2024-09-15 |
Download trend
Daily snapshots, last 90 days (13 Aug – 10 Nov)
2.6 M144 K
Qwen2-1.5B-Instruct
Qwen2.5-0.5B
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
Qwen2.5-0.5B · fp16
1.7 GB / 24 GB
Qwen2-1.5B-Instruct · fp16
4.1 GB / 24 GB