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openai/gpt-oss-20b

LM-STUDIO GGUF

gpt-oss · 20B · MXFP4

Excellent

Nov 9, 2026 · Apple M3 Max

GPT-20B:20b

OLLAMA GGUF

gptoss · 20.9B · MXFP4

Good

Aug 24, 2026 · Intel Core™ Ultra X7 358H

Global Score
91 vs 78
Hardware Fit
90 vs 59
Quality Score
91 vs 86

Hardware

openai/gpt-oss-20b GPT-20B:20b
MachineMacBook ProGMKtec NucBox EVO-T2S
CPUApple M3 MaxIntel Core™ Ultra X7 358H
Cores1616
RAM128 GB64 GB
GPUApple M3 MaxIntel(R) Arc(TM) B390 GPU
OSmacOS 27.2Microsoft Windows 11 Pro 10.0.26200
Archarm64x64
Power Modebalancedbalanced

Performance

openai/gpt-oss-20b GPT-20B:20b
Tokens/sec95.119.6
First chunk3 ms2068 ms
TTFT2.5 s9.9 s
Load time9.2 s12.8 s
Memory usage0.0 GB12.9 GB
Memory %0%20%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed
50/50
TTFT
10/20
Memory
30/30

GPT-20B:20b

Speed
26/50
TTFT
3/20
Memory
30/30

Quality

openai/gpt-oss-20b

Reasoning
18/20
Coding
15/20
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

GPT-20B:20b

Reasoning
18/20
Coding
18/20
Instruction
11/20
Structured
14/15
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-20B:20b details

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