gpt-oss-120b vs Hy3

Specs, VRAM requirements and download trends — updated 23 October 2026.

openai · A · Open weights
Params
120.4 B
Context
131,072
30d
3.0 M
apache-2.0 · commercial OK
tencent · B · Open weights
Params
298.8 B
Context
262,144
30d
798 K
apache-2.0 · commercial OK

Specification comparison

Differences are highlighted; identical values are muted.

Specification gpt-oss-120b Hy3
Deployment Open weights · also via API Open weights · also via API
Parameters 120.4 B 298.8 B
Architecture GptOssForCausalLM HYV3ForCausalLM
Context length 131,072 262,144
Licence apache-2.0 apache-2.0
Commercial use Allowed Allowed
Languages — —
Downloads 30d 2,964,075 797,888
Downloads all time 60.3 M 842 K
Quantizations on the Hub SAFETENSORS SAFETENSORS
Gated No No
First seen on the Hub 2025-08-04 2026-07-02
API input price / 1M tokens $0.15 $0.13
API output price / 1M tokens $0.60 $0.53
Est. cost per 1M input + 1M output tokens $0.75 $0.66
Cached input / 1M tokens $0.075 $0.033
AA Intelligence Index 11.6 —
AA Coding Index 30.4 —
AA Agentic Index 3.7 —
Max output tokens 65,536 128,000
API providers 22 5
Tool calling Yes Yes
Reasoning mode Yes Yes

API cost

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

gpt-oss-120b $0.75
Hy3 $0.66

Hy3 is 1.1× cheaper at list price.

Download trend

Daily snapshots, last 88 days (28 Jul – 23 Oct)

5.5 M188 K
gpt-oss-120b Hy3

VRAM side by side

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

gpt-oss-120b · fp16 @ 128K ctx 433.0 GB / 24 GB
❌ Won’t fit
Hy3 · fp16 @ 256K ctx 2,092.0 GB / 24 GB
❌ Won’t fit

Adjacent comparisons