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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Mar 19, 2026 · Apple M4

qwen3.5:4b

OLLAMA GGUF

qwen35 · 4.2B · Q4_K_M

Excellent

Oct 12, 2026 · AMD Ryzen 5 5500

Global Score
77 vs 81
Hardware Fit
67 vs 98
Quality Score
81 vs 74

Hardware

openai/gpt-oss-20b qwen3.5:4b
MachineMac miniMicrosoft WSL
CPUApple M4AMD Ryzen 5 5500
Cores1012
RAM24 GB8 GB
GPUApple M4Integrated / Unknown
OSmacOS 26.3Ubuntu 26.04.1 LTS
Archarm64x64
Power Modebalancedunknown

Performance

openai/gpt-oss-20b qwen3.5:4b
Tokens/sec30.593.7
First chunk18 ms249 ms
TTFT30.0 s249 ms
Load timeN/A10.1 s
Memory usage15.8 GB2.9 GB
Memory %66%38%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed
50/50
TTFT
0/20
Memory
17/30

qwen3.5:4b

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

Quality

openai/gpt-oss-20b

Reasoning
19/20
Coding
11/20
Instruction
12/20
Structured
15/15
Math
14/15
Multilingual
10/10
Reasoning: Strong Coding: Adequate Instruction Following: Adequate Structured Output: Strong Math: Strong Multilingual: Strong

qwen3.5:4b

Reasoning
15/20
Coding
13/20
Instruction
15/20
Structured
15/15
Math
7/15
Multilingual
9/10
Reasoning: Strong Coding: Adequate Instruction Following: Strong Structured Output: Strong Math: Weak Multilingual: Strong
View openai/gpt-oss-20b details | View qwen3.5:4b details

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