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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 5, 2026 · AMD RYZEN AI MAX+ 395

Global Score
91 vs 93
Hardware Fit
90 vs 85
Quality Score
91 vs 96

Hardware

openai/gpt-oss-20b gpt-oss:20b
MachineMacBook ProAZW GTR Pro
CPUApple M3 MaxAMD RYZEN AI MAX+ 395
Cores1632
RAM128 GB125 GB
GPUApple M3 MaxAMD Radeon 8060S
OSmacOS 27.2Ubuntu 24.04.4 LTS
Archarm64x64
Power Modebalancedlow-power

Performance

openai/gpt-oss-20b gpt-oss:20b
Tokens/sec95.147.1
First chunk3 ms320 ms
TTFT2.5 s1.8 s
Load time9.2 s3.8 s
Memory usage0.0 GB16.4 GB
Memory %0%13%

HW Fit Score Breakdown

openai/gpt-oss-20b

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

gpt-oss:20b

Speed
44/50
TTFT
11/20
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-oss:20b

Reasoning
19/20
Coding
19/20
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 openai/gpt-oss-20b details | View gpt-oss:20b details

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$ npm install -g metrillm@latest
$ metrillm

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Or run without installing: npx metrillm@latest