Qwen2.5-1.5B-Instruct vs Zamba2-1.2B-instruct

Specs, VRAM requirements and download trends — updated 6 August 2026.

Qwen · A
Params
1.5 B
Context
32,768
30d
14.0 M
apache-2.0 · commercial OK
Zyphra · B
Params
1.2 B
Context
4,096
30d
429 K
apache-2.0 · commercial OK

Specification comparison

Differences are highlighted; identical values are muted.

Specification Qwen2.5-1.5B-Instruct Zamba2-1.2B-instruct
Parameters 1.5 B 1.2 B
Architecture Qwen2ForCausalLM Zamba2ForCausalLM
Context length 32,768 4,096
Licence apache-2.0 apache-2.0
Commercial use Allowed Allowed
Languages 1
Downloads 30d 13,977,170 429,320
Downloads all time 206.3 M 2.0 M
Quantizations on the Hub SAFETENSORS SAFETENSORS
Gated No No
First seen on the Hub 2024-09-17 2024-09-19

Download trend

Daily snapshots, last 10 days (28 Jul – 6 Aug)

14.2 M413 K
Qwen2.5-1.5B-Instruct Zamba2-1.2B-instruct

VRAM side by side

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

Qwen2.5-1.5B-Instruct · fp16 4.1 GB / 24 GB
✅ Runs comfortably
Zamba2-1.2B-instruct · fp16 6.0 GB / 24 GB
✅ Runs comfortably

Adjacent comparisons