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gpt-oss:120b

OLLAMA GGUF

gptoss · 116.8B · MXFP4

Excellent

Oct 2, 2026 · Cortex-X925

gpt-oss-20b

LM-STUDIO GGUF
Excellent

Mar 6, 2026 · Apple M4 Pro

Global Score
83 vs 95
Hardware Fit
64 vs 94
Quality Score
91 vs 95

Hardware

gpt-oss:120b gpt-oss-20b
MachineNVIDIA NVIDIA_DGX_SparkMac mini
CPUCortex-X925Apple M4 Pro
Cores2014
RAM122 GB64 GB
GPUDevice 2e12Apple M4 Pro
OSUbuntu 24.04.5 LTSmacOS 15.7.4
Archarm64arm64
Power Modeperformancebalanced

Performance

gpt-oss:120b gpt-oss-20b
Tokens/sec28.6118.2
First chunk422 ms471 ms
TTFT2.5 s2.2 s
Load time9.9 sN/A
Memory usage60.1 GB11.3 GB
Memory %49%18%

HW Fit Score Breakdown

gpt-oss:120b

Speed
30/50
TTFT
9/20
Memory
25/30

gpt-oss-20b

Speed
50/50
TTFT
14/20
Memory
30/30

Quality

gpt-oss:120b

Reasoning
19/20
Coding
19/20
Instruction
14/20
Structured
14/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Strong Instruction Following: Adequate Structured Output: Strong Math: Strong Multilingual: Strong

gpt-oss-20b

Reasoning
19/20
Coding
18/20
Instruction
18/20
Structured
15/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Strong Instruction Following: Strong Structured Output: Strong Math: Strong Multilingual: Strong
View gpt-oss:120b details | View gpt-oss-20b details

Run yours and compare

$ npm install -g metrillm@latest
$ metrillm

Requires Node 20+ and Ollama or LM Studio running

Or run without installing: npx metrillm@latest