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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Jul 17, 2026 · Apple M5 Max

nemotron-3-nano:4b

OLLAMA GGUF

nemotron_h · 4.0B · Q4_K_M

Excellent

Aug 25, 2026 · Apple M1 Pro

Global Score
83 vs 85
Hardware Fit
80 vs 100
Quality Score
84 vs 78

Hardware

openai/gpt-oss-20b nemotron-3-nano:4b
MachineMacBook ProMacBook Pro
CPUApple M5 MaxApple M1 Pro
Cores1810
RAM64 GB16 GB
GPUApple M5 MaxApple M1 Pro
OSmacOS 27.0macOS 26.6.2
Archarm64arm64
Power Modebalancedbalanced

Performance

openai/gpt-oss-20b nemotron-3-nano:4b
Tokens/sec131.731.7
First chunk7 ms265 ms
TTFT30.0 s265 ms
Load timeN/A2.2 s
Memory usage15.8 GB4.1 GB
Memory %25%25%

HW Fit Score Breakdown

openai/gpt-oss-20b

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

nemotron-3-nano:4b

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

Quality

openai/gpt-oss-20b

Reasoning
18/20
Coding
13/20
Instruction
14/20
Structured
14/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Adequate Instruction Following: Adequate Structured Output: Strong Math: Strong Multilingual: Strong

nemotron-3-nano:4b

Reasoning
16/20
Coding
14/20
Instruction
16/20
Structured
14/15
Math
8/15
Multilingual
10/10
Reasoning: Strong Coding: Adequate Instruction Following: Strong Structured Output: Strong Math: Adequate Multilingual: Strong
View openai/gpt-oss-20b details | View nemotron-3-nano:4b details

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