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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Excellent

Mar 11, 2026 · Apple M4

phi-1_5

LM-STUDIO GGUF

phi2 · Q8_0

Not Rec.

Mar 6, 2026 · Intel Core™ i5-5300U

Global Score
95 vs 28
Hardware Fit
99 vs 66
Quality Score
93 vs 11

Hardware

openai/gpt-oss-20b phi-1_5
MachineMac miniLENOVO 20BUS00700
CPUApple M4Intel Core™ i5-5300U
Cores104
RAM24 GB16 GB
GPUApple M4Intel(R) HD Graphics 5500
OSmacOS 26.3Microsoft Windows 10 Professionnel 10.0.19045
Archarm64x64
Power Modebalancedbalanced

Performance

openai/gpt-oss-20b phi-1_5
Tokens/sec29.36.9
First chunk21 ms3040 ms
TTFT1.8 s3.0 s
Load time18.5 sN/A
Memory usage0.0 GB1.4 GB
Memory %0%9%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed
50/50
TTFT
19/20
Memory
30/30

phi-1_5

Speed
24/50
TTFT
16/20
Memory
26/30

Quality

openai/gpt-oss-20b

Reasoning
19/20
Coding
18/20
Instruction
16/20
Structured
15/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Strong Instruction Following: Strong Structured Output: Strong Math: Strong Multilingual: Strong

phi-1_5

Reasoning
2/20
Coding
2/20
Instruction
3/20
Structured
0/15
Math
2/15
Multilingual
2/10
Reasoning: Poor Coding: Poor Instruction Following: Poor Structured Output: Poor Math: Poor Multilingual: Poor

Run yours and compare

$ npm install -g metrillm@latest
$ metrillm

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Or run without installing: npx metrillm@latest