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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Jul 17, 2026 · Apple M5 Max

GPT-OSS-120B:120B

OLLAMA GGUF

gptoss · 116.8B · MXFP4

Not Rec.

Aug 18, 2026 · Intel Core™ Ultra X7 358H

Global Score
83 vs 67
Hardware Fit
80 vs 21
Quality Score
84 vs 87

Hardware

openai/gpt-oss-20b GPT-OSS-120B:120B
MachineMacBook ProGMKtec NucBox EVO-T2S
CPUApple M5 MaxIntel Core™ Ultra X7 358H
Cores1816
RAM64 GB64 GB
GPUApple M5 MaxIntel(R) Arc(TM) B390 GPU
OSmacOS 27.0Microsoft Windows 11 Pro 10.0.26200
Archarm64x64
Power Modebalancedbalanced

Performance

openai/gpt-oss-20b GPT-OSS-120B:120B
Tokens/sec131.711.7
First chunk7 ms4289 ms
TTFT30.0 s9.2 s
Load timeN/A84.1 s
Memory usage15.8 GB61.0 GB
Memory %25%96%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed
50/50
TTFT
0/20
Memory
30/30

GPT-OSS-120B:120B

Speed
15/50
TTFT
4/20
Memory
2/30

Quality

openai/gpt-oss-20b

Reasoning
18/20
Coding
13/20
Instruction
14/20
Structured
14/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Adequate Instruction Following: Adequate Structured Output: Strong Math: Strong Multilingual: Strong

GPT-OSS-120B:120B

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

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