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openai/gpt-oss-20b

LM-STUDIO GGUF

gpt-oss · 20B · MXFP4

Excellent

Nov 9, 2026 · Apple M3 Max

gpt-oss:20b

OLLAMA GGUF

gptoss · 20.9B · MXFP4

Excellent

Mar 19, 2026 · Apple M4

Global Score
91 vs 87
Hardware Fit
90 vs 79
Quality Score
91 vs 90

Hardware

openai/gpt-oss-20b gpt-oss:20b
MachineMacBook ProMac mini
CPUApple M3 MaxApple M4
Cores1610
RAM128 GB24 GB
GPUApple M3 MaxApple M4
OSmacOS 27.2macOS 26.3
Archarm64arm64
Power Modebalancedbalanced

Performance

openai/gpt-oss-20b gpt-oss:20b
Tokens/sec95.126.4
First chunk3 ms505 ms
TTFT2.5 s6.7 s
Load time9.2 s10.5 s
Memory usage0.0 GB13.1 GB
Memory %0%55%

HW Fit Score Breakdown

openai/gpt-oss-20b

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

gpt-oss:20b

Speed
50/50
TTFT
6/20
Memory
23/30

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-oss:20b

Reasoning
19/20
Coding
18/20
Instruction
13/20
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:20b details

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