gpt-oss-120b vs magnum-v4-72b

Specs, VRAM requirements and download trends — updated 25 October 2026.

openai · A · Open weights
Params
120.4 B
Context
131,072
30d
2.9 M
apache-2.0 · commercial OK
anthracite-org · B · Open weights
Params
72.7 B
Context
32,768
30d
880
apache-2.0 · commercial OK

Specification comparison

Differences are highlighted; identical values are muted.

Specification gpt-oss-120b magnum-v4-72b
Deployment Open weights · also via API Open weights · also via API
Parameters 120.4 B 72.7 B
Architecture GptOssForCausalLM Qwen2ForCausalLM
Context length 131,072 32,768
Licence apache-2.0 apache-2.0
Commercial use Allowed Allowed
Languages — 1
Downloads 30d 2,893,802 880
Downloads all time 60.5 M 50 K
Quantizations on the Hub SAFETENSORS SAFETENSORS
Gated No No
First seen on the Hub 2025-08-04 2024-09-20
API input price / 1M tokens $0.15 $2.50
API output price / 1M tokens $0.60 $5.00
Est. cost per 1M input + 1M output tokens $0.75 $7.50
Cached input / 1M tokens $0.075 —
AA Intelligence Index 11.6 —
AA Coding Index 30.4 —
AA Agentic Index 3.7 —
Max output tokens 65,536 4,096
API providers 22 1
Tool calling Yes No
Reasoning mode Yes No

API cost

Estimated cost of 1M input + 1M output tokens via OpenRouter

gpt-oss-120b $0.75
magnum-v4-72b $7.50

gpt-oss-120b is 10.0× cheaper at list price.

Download trend

Daily snapshots, last 90 days (28 Jul – 25 Oct)

5.5 M800
gpt-oss-120b magnum-v4-72b

VRAM side by side

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

magnum-v4-72b · fp16 171.4 GB / 24 GB
❌ Won’t fit
gpt-oss-120b · fp16 @ 128K ctx 433.0 GB / 24 GB
❌ Won’t fit

Adjacent comparisons