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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Sep 29, 2026 · Apple M5 Max

nemotron-3-nano

LM-STUDIO GGUF
Excellent

Mar 6, 2026 · Apple M4 Pro

Global Score
83 vs 93
Hardware Fit
80 vs 100
Quality Score
84 vs 90

Hardware

openai/gpt-oss-20b nemotron-3-nano
MachineMacBook ProMac mini
CPUApple M5 MaxApple M4 Pro
Cores1814
RAM128 GB64 GB
GPUApple M5 MaxApple M4 Pro
OSmacOS 26.6.2macOS 15.7.4
Archarm64arm64
Power Modebalancedbalanced

Performance

openai/gpt-oss-20b nemotron-3-nano
Tokens/sec138.493.3
First chunk3 ms257 ms
TTFT30.0 s257 ms
Load time6.8 sN/A
Memory usage0.5 GB0.1 GB
Memory %0%0%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed
50/50
TTFT
0/20
Memory
30/30

nemotron-3-nano

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

Quality

openai/gpt-oss-20b

Reasoning
18/20
Coding
12/20
Instruction
15/20
Structured
14/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Adequate Instruction Following: Strong Structured Output: Strong Math: Strong Multilingual: Strong

nemotron-3-nano

Reasoning
19/20
Coding
18/20
Instruction
14/20
Structured
15/15
Math
14/15
Multilingual
10/10
Reasoning: Strong Coding: Strong Instruction Following: Adequate Structured Output: Strong Math: Strong Multilingual: Strong
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