openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Sep 29, 2026 · Apple M5 Max

qwen3.5:4b

OLLAMA GGUF

qwen35 · 4.7B · Q4_K_M

Not Rec.

Mar 5, 2026 · AMD RYZEN AI MAX+ 395

Global Score

83 vs 65

Hardware Fit

80 vs 73

Quality Score

84 vs 62

Hardware

openai/gpt-oss-20b qwen3.5:4b

MachineMacBook ProAZW GTR Pro

CPUApple M5 MaxAMD RYZEN AI MAX+ 395

Cores1832

RAM128 GB125 GB

GPUApple M5 MaxAMD Radeon 8060S

OSmacOS 26.6.2Ubuntu 24.04.4 LTS

Archarm64x64

Power Modebalancedlow-power

Performance

openai/gpt-oss-20b qwen3.5:4b

Tokens/sec138.445.7

First chunk3 ms180 ms

TTFT30.0 s30.0 s

Load time6.8 s5.3 s

Memory usage0.5 GB16.2 GB

Memory %0%13%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed

50/50

TTFT

0/20

Memory

30/30

qwen3.5:4b

Speed

43/50

TTFT

0/20

Memory

30/30

Quality

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

qwen3.5:4b

Reasoning

17/20

Coding

1/20

Instruction

13/20

Structured

8/15

Math

13/15

Multilingual

10/10

Reasoning: Strong Coding: Poor Instruction Following: Adequate Structured Output: Adequate Math: Strong Multilingual: Strong

View openai/gpt-oss-20b details | View qwen3.5:4b details

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