opt-125m vs Qwen2-0.5B-Instruct

Specs, VRAM requirements and download trends — updated 21 September 2026.

facebook · A
Params
125 M
Context
2,048
30d
7.0 M
Qwen · B
Params
490 M
Context
32,768
30d
302 K
apache-2.0 · commercial OK

Specification comparison

Differences are highlighted; identical values are muted.

Specification opt-125m Qwen2-0.5B-Instruct
Parameters 125 M 490 M
Architecture OPTForCausalLM Qwen2ForCausalLM
Context length 2,048 32,768
Licence other apache-2.0
Commercial use Unknown Allowed
Languages 1 1
Downloads 30d 7,015,695 302,217
Downloads all time 213.8 M 8.6 M
Quantizations on the Hub SAFETENSORS
Gated No No
First seen on the Hub 2022-05-11 2024-06-03

Download trend

Daily snapshots, last 56 days (28 Jul – 21 Sep)

18.6 M250 K
opt-125m Qwen2-0.5B-Instruct

VRAM side by side

On RTX 4090 · 24 GB · 8K context unless noted

Qwen2-0.5B-Instruct · fp16 1.7 GB / 24 GB
✅ Runs comfortably

Adjacent comparisons