Qwen2.5-1.5B-Instruct vs Qwen1.5-0.5B-Chat
Specs, VRAM requirements and download trends — updated 6 August 2026.
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | Qwen2.5-1.5B-Instruct | Qwen1.5-0.5B-Chat |
|---|---|---|
| Parameters | 1.5 B | 620 M |
| Architecture | Qwen2ForCausalLM | Qwen2ForCausalLM |
| Context length | 32,768 | 32,768 |
| Licence | apache-2.0 | other |
| Commercial use | Allowed | Unknown |
| Languages | 1 | 1 |
| Downloads 30d | 13,977,170 | 200,708 |
| Downloads all time | 206.3 M | 7.9 M |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2024-09-17 | 2024-01-31 |
Download trend
Daily snapshots, last 10 days (28 Jul – 6 Aug)
14.2 M160 K
Qwen2.5-1.5B-Instruct
Qwen1.5-0.5B-Chat
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
Qwen1.5-0.5B-Chat · fp16
2.0 GB / 24 GB
Qwen2.5-1.5B-Instruct · fp16
4.1 GB / 24 GB