openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Excellent

Apr 1, 2026 · Apple M4

gemma-4-31b-it-mlx

LM-STUDIO MLX

gemma4 · 31B · 8bit

Excellent

Aug 19, 2026 · Apple M4 Max

Global Score

82 vs 85

Hardware Fit

85 vs 64

Quality Score

81 vs 94

Hardware

openai/gpt-oss-20b gemma-4-31b-it-mlx

MachineMac miniMacBook Pro

CPUApple M4Apple M4 Max

Cores1016

RAM24 GB128 GB

GPUApple M4Apple M4 Max

OSmacOS 26.3macOS 26.5.2

Archarm64arm64

Power Modebalancedbalanced

Performance

openai/gpt-oss-20b gemma-4-31b-it-mlx

Tokens/sec31.813.6

First chunk32 ms16 ms

TTFT8.4 s558 ms

Load time22.7 s12.3 s

Memory usage0.0 GB0.0 GB

Memory %0%0%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed

50/50

TTFT

5/20

Memory

30/30

gemma-4-31b-it-mlx

Speed

14/50

TTFT

20/20

Memory

30/30

Quality

openai/gpt-oss-20b

Reasoning

19/20

Coding

14/20

Instruction

9/20

Structured

14/15

Math

15/15

Multilingual

10/10

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

gemma-4-31b-it-mlx

Reasoning

19/20

Coding

19/20

Instruction

18/20

Structured

15/15

Math

14/15

Multilingual

9/10

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

View openai/gpt-oss-20b details | View gemma-4-31b-it-mlx 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