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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Jul 17, 2026 · Apple M5 Max

gpt-oss:20b

OLLAMA GGUF

gptoss · 20.9B · MXFP4

Excellent

Aug 18, 2026 · Intel Core™ Ultra X7 358H

Global Score
83 vs 81
Hardware Fit
80 vs 59
Quality Score
84 vs 91

Hardware

openai/gpt-oss-20b gpt-oss:20b
MachineMacBook ProGMKtec NucBox EVO-T2S
CPUApple M5 MaxIntel Core™ Ultra X7 358H
Cores1816
RAM64 GB64 GB
GPUApple M5 MaxIntel(R) Arc(TM) B390 GPU
OSmacOS 27.0Microsoft Windows 11 Pro 10.0.26200
Archarm64x64
Power Modebalancedbalanced

Performance

openai/gpt-oss-20b gpt-oss:20b
Tokens/sec131.719.1
First chunk7 ms1985 ms
TTFT30.0 s11.1 s
Load timeN/A7.7 s
Memory usage15.8 GB12.9 GB
Memory %25%20%

HW Fit Score Breakdown

openai/gpt-oss-20b

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

gpt-oss:20b

Speed
26/50
TTFT
3/20
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

gpt-oss:20b

Reasoning
18/20
Coding
19/20
Instruction
14/20
Structured
15/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Strong Instruction Following: Adequate Structured Output: Strong Math: Strong Multilingual: Strong
View openai/gpt-oss-20b details | View gpt-oss:20b details

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