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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Jul 17, 2026 · Apple M5 Max

openai/gpt-oss-20b

LM-STUDIO GGUF

gpt-oss · 20B · MXFP4

Excellent

Apr 24, 2026 · AMD Ryzen 5 5500

Global Score
83 vs 90
Hardware Fit
80 vs 88
Quality Score
84 vs 91

Hardware

openai/gpt-oss-20b openai/gpt-oss-20b
MachineMacBook ProASUS
CPUApple M5 MaxAMD Ryzen 5 5500
Cores1812
RAM64 GB31 GB
GPUApple M5 MaxNavi 44 [Radeon RX 9060 XT]
OSmacOS 27.0Nobara Linux 43
Archarm64x64
Power Modebalancedperformance

Performance

openai/gpt-oss-20b openai/gpt-oss-20b
Tokens/sec131.758.7
First chunk7 ms6 ms
TTFT30.0 s4.5 s
Load timeN/AN/A
Memory usage15.8 GB11.9 GB
Memory %25%38%

HW Fit Score Breakdown

openai/gpt-oss-20b

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

openai/gpt-oss-20b

Speed
50/50
TTFT
10/20
Memory
28/30

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

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: Adequate Instruction Following: Strong Structured Output: Strong Math: Strong Multilingual: Strong
View openai/gpt-oss-20b details | View openai/gpt-oss-20b details

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