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gpt-oss-20b

LM-STUDIO GGUF
Excellent

Mar 6, 2026 · Apple M4 Pro

gpt-oss:20b

OLLAMA GGUF

gptoss · 20.9B · MXFP4

Excellent

Mar 10, 2026 · Apple M4

Global Score
95 vs 83
Hardware Fit
94 vs 65
Quality Score
95 vs 90

Hardware

gpt-oss-20b gpt-oss:20b
MachineMac miniMac mini
CPUApple M4 ProApple M4
Cores1410
RAM64 GB24 GB
GPUApple M4 ProApple M4
OSmacOS 15.7.4macOS 26.3
Archarm64arm64
Power Modebalancedbalanced

Performance

gpt-oss-20b gpt-oss:20b
Tokens/sec118.217.1
First chunk471 ms705 ms
TTFT2.2 s10.2 s
Load timeN/A23.1 s
Memory usage11.3 GB13.1 GB
Memory %18%55%

HW Fit Score Breakdown

gpt-oss-20b

Speed
50/50
TTFT
14/20
Memory
30/30

gpt-oss:20b

Speed
37/50
TTFT
5/20
Memory
23/30

Quality

gpt-oss-20b

Reasoning
19/20
Coding
18/20
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

gpt-oss:20b

Reasoning
19/20
Coding
18/20
Instruction
13/20
Structured
15/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Strong Instruction Following: Adequate Structured Output: Strong Math: Strong Multilingual: Strong
View gpt-oss-20b details | View gpt-oss:20b 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