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openai/gpt-oss-20b

LM-STUDIO GGUF

gpt-oss · 20B · MXFP4

Excellent

Nov 9, 2026 · Apple M3 Max

openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Excellent

Apr 1, 2026 · Apple M4

Global Score
91 vs 82
Hardware Fit
90 vs 85
Quality Score
91 vs 81

Hardware

openai/gpt-oss-20b openai/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 openai/gpt-oss-20b
Tokens/sec95.131.8
First chunk3 ms32 ms
TTFT2.5 s8.4 s
Load time9.2 s22.7 s
Memory usage0.0 GB0.0 GB
Memory %0%0%

HW Fit Score Breakdown

openai/gpt-oss-20b

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

openai/gpt-oss-20b

Speed
50/50
TTFT
5/20
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

openai/gpt-oss-20b

Reasoning
19/20
Coding
14/20
Instruction
9/20
Structured
14/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Adequate Instruction Following: Weak Structured Output: Strong Math: Strong Multilingual: Strong
View openai/gpt-oss-20b details | View openai/gpt-oss-20b details

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