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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Oct 20, 2026 · Apple M1 Pro

gpt-oss-orchestrator:latest

OLLAMA GGUF

gptoss · 20.9B · MXFP4

Excellent

Mar 19, 2026 · Apple M4

Global Score
83 vs 88
Hardware Fit
75 vs 80
Quality Score
87 vs 91

Hardware

openai/gpt-oss-20b gpt-oss-orchestrat…
MachineMacBook ProMac mini
CPUApple M1 ProApple M4
Cores1010
RAM32 GB24 GB
GPUApple M1 ProApple M4
OSmacOS 15.6.1macOS 26.3
Archarm64arm64
Power Modebalancedbalanced

Performance

openai/gpt-oss-20b gpt-oss-orchestrat…
Tokens/sec43.224.6
First chunk46 ms525 ms
TTFT30.0 s4.8 s
Load timeN/A8.5 s
Memory usage15.8 GB13.8 GB
Memory %49%58%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed
50/50
TTFT
0/20
Memory
25/30

gpt-oss-orchestrator:la…

Speed
49/50
TTFT
10/20
Memory
21/30

Quality

openai/gpt-oss-20b

Reasoning
19/20
Coding
14/20
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

gpt-oss-orchestrator:la…

Reasoning
19/20
Coding
19/20
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

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