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openai/gpt-oss-20b

LM-STUDIO GGUF

gpt-oss · 20B · MXFP4

Not Rec.

Jul 5, 2026 · AMD Ryzen 7 7800X3D 8-Core Processor

qwen3.5-0.8b-mlx

LM-STUDIO MLX

qwen3_5 · 0.8B · 4bit

Marginal

Mar 6, 2026 · Apple M4 Pro

Global Score
84 vs 53
Hardware Fit
65 vs 89
Quality Score
92 vs 38

Hardware

openai/gpt-oss-20b qwen3.5-0.8b-mlx
MachineASUSMac mini
CPUAMD Ryzen 7 7800X3D 8-Core ProcessorApple M4 Pro
Cores1614
RAM31 GB64 GB
GPUNVIDIA GeForce RTX 4090, RaphaelApple M4 Pro
OScachyos rollingmacOS 15.7.4
Archx64arm64
Power Modeperformancebalanced

Performance

openai/gpt-oss-20b qwen3.5-0.8b-mlx
Tokens/sec221.552.9
First chunk5 ms4013 ms
TTFT30.0 s4.0 s
Load timeN/AN/A
Memory usage21.1 GB0.6 GB
Memory %69%1%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed
50/50
TTFT
0/20
Memory
15/30

qwen3.5-0.8b-mlx

Speed
50/50
TTFT
9/20
Memory
30/30

Quality

openai/gpt-oss-20b

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

qwen3.5-0.8b-mlx

Reasoning
7/20
Coding
2/20
Instruction
12/20
Structured
10/15
Math
2/15
Multilingual
5/10
Reasoning: Weak Coding: Poor Instruction Following: Adequate Structured Output: Adequate Math: Poor Multilingual: Adequate

Run yours and compare

$ npm install -g metrillm@latest
$ metrillm

Requires Node 20+ and Ollama or LM Studio running

Or run without installing: npx metrillm@latest