Qwen2.5-1.5B-Instruct vs Qwen1.5-1.8B-Chat
Specs, VRAM requirements and download trends — updated 25 October 2026.
Qwen · A · Open weights
Params
1.5 B
Context
32,768
30d
4.7 M
apache-2.0 · commercial OK
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | Qwen2.5-1.5B-Instruct | Qwen1.5-1.8B-Chat |
|---|---|---|
| Parameters | 1.5 B | 1.8 B |
| Architecture | Qwen2ForCausalLM | Qwen2ForCausalLM |
| Context length | 32,768 | 32,768 |
| Licence | apache-2.0 | other |
| Commercial use | Allowed | Unknown |
| Languages | 1 | 1 |
| Downloads 30d | 4,705,359 | 184,874 |
| Downloads all time | 225.0 M | 1.5 M |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2024-09-17 | 2024-01-30 |
Download trend
Daily snapshots, last 90 days (28 Jul – 25 Oct)
14.2 M165 K
Qwen2.5-1.5B-Instruct
Qwen1.5-1.8B-Chat
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
Qwen2.5-1.5B-Instruct · fp16
4.1 GB / 24 GB
Qwen1.5-1.8B-Chat · fp16
4.8 GB / 24 GB