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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Excellent

Mar 11, 2026 · Apple M4

qwen3.5:latest

OLLAMA GGUF

qwen35 · 9.7B · Q4_K_M

Not Rec.

Mar 8, 2026 · Apple M4

Global Score
95 vs 34
Hardware Fit
99 vs 58
Quality Score
93 vs 23

Hardware

openai/gpt-oss-20b qwen3.5:latest
MachineMac miniMac mini
CPUApple M4Apple M4
Cores1010
RAM24 GB16 GB
GPUApple M4Apple M4
OSmacOS 26.3macOS 26.3
Archarm64arm64
Power Modebalancedbalanced

Performance

openai/gpt-oss-20b qwen3.5:latest
Tokens/sec29.313.3
First chunk21 ms438 ms
TTFT1.8 s19.8 s
Load time18.5 s0.2 s
Memory usage0.0 GB8.0 GB
Memory %0%50%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed
50/50
TTFT
19/20
Memory
30/30

qwen3.5:latest

Speed
32/50
TTFT
1/20
Memory
25/30

Quality

openai/gpt-oss-20b

Reasoning
19/20
Coding
18/20
Instruction
16/20
Structured
15/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Strong Instruction Following: Strong Structured Output: Strong Math: Strong Multilingual: Strong

qwen3.5:latest

Reasoning
6/20
Coding
1/20
Instruction
3/20
Structured
0/15
Math
5/15
Multilingual
8/10
Reasoning: Weak Coding: Poor Instruction Following: Poor Structured Output: Poor Math: Weak Multilingual: Strong
View openai/gpt-oss-20b details | View qwen3.5:latest details

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$ metrillm

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Or run without installing: npx metrillm@latest