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openai/gpt-oss-20b

LM-STUDIO GGUF

gpt-oss · 20B · MXFP4

Excellent

Apr 24, 2026 · AMD Ryzen 5 5500

openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Sep 29, 2026 · Apple M5 Max

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

Hardware

openai/gpt-oss-20b openai/gpt-oss-20b
MachineASUSMacBook Pro
CPUAMD Ryzen 5 5500Apple M5 Max
Cores1218
RAM31 GB128 GB
GPUNavi 44 [Radeon RX 9060 XT]Apple M5 Max
OSNobara Linux 43macOS 26.6.2
Archx64arm64
Power Modeperformancebalanced

Performance

openai/gpt-oss-20b openai/gpt-oss-20b
Tokens/sec58.7138.4
First chunk6 ms3 ms
TTFT4.5 s30.0 s
Load timeN/A6.8 s
Memory usage11.9 GB0.5 GB
Memory %38%0%

HW Fit Score Breakdown

openai/gpt-oss-20b

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

openai/gpt-oss-20b

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

Quality

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

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
View openai/gpt-oss-20b details | View openai/gpt-oss-20b details

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