Back to leaderboard

hf.co/unsloth/gpt-oss-20b-GGUF:Q4_K_M

OLLAMA GGUF

gpt-oss · 20.9B · unknown

Excellent

Aug 24, 2026 · Apple M1 Pro

openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Jul 17, 2026 · Apple M5 Max

Global Score
86 vs 83
Hardware Fit
75 vs 80
Quality Score
90 vs 84

Hardware

hf.co/unsloth/gpt-… openai/gpt-oss-20b
MachineMacBook ProMacBook Pro
CPUApple M1 ProApple M5 Max
Cores1018
RAM16 GB64 GB
GPUApple M1 ProApple M5 Max
OSmacOS 26.6.2macOS 27.0
Archarm64arm64
Power Modebalancedbalanced

Performance

hf.co/unsloth/gpt-… openai/gpt-oss-20b
Tokens/sec35.9131.7
First chunk1082 ms7 ms
TTFT5.2 s30.0 s
Load time8.2 sN/A
Memory usage11.1 GB15.8 GB
Memory %69%25%

HW Fit Score Breakdown

hf.co/unsloth/gpt-oss-2…

Speed
50/50
TTFT
10/20
Memory
15/30

openai/gpt-oss-20b

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

Quality

hf.co/unsloth/gpt-oss-2…

Reasoning
19/20
Coding
17/20
Instruction
15/20
Structured
14/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Strong Instruction Following: Strong Structured Output: Strong Math: Strong Multilingual: Strong

openai/gpt-oss-20b

Reasoning
18/20
Coding
13/20
Instruction
14/20
Structured
14/15
Math
15/15
Multilingual
10/10
Reasoning: Strong Coding: Adequate Instruction Following: Adequate Structured Output: Strong Math: Strong Multilingual: Strong
View hf.co/unsloth/gpt-… details | View openai/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