GPT-20B:20b

OLLAMA GGUF

gptoss · 20.9B · MXFP4

Excellent

Aug 22, 2026 · NVIDIA RTX Spark N1X (6144-core GPU, 20-core ) RTX Spark N1X (6144-core GPU, 20-core )

openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Jul 17, 2026 · Apple M5 Max

Global Score

93 vs 83

Hardware Fit

91 vs 80

Quality Score

94 vs 84

Hardware

GPT-20B:20b openai/gpt-oss-20b

MachineHP HyperX OMEN Transcend Gaming Laptop 14-ga0xxx5CD612DXMLMacBook Pro

CPUNVIDIA RTX Spark N1X (6144-core GPU, 20-core ) RTX Spark N1X (6144-core GPU, 20-core )Apple M5 Max

Cores2018

RAM55 GB64 GB

GPUNVIDIA RTX Spark N1X (6144-core Blackwell RTX GPU), NVIDIA NPUApple M5 Max

OSMicrosoft Windows 11 Pro 10.0.28000macOS 27.0

Archarm64arm64

Power Modebalancedbalanced

Performance

GPT-20B:20b openai/gpt-oss-20b

Tokens/sec57.8131.7

First chunk203 ms7 ms

TTFT3.0 s30.0 s

Load time19.2 sN/A

Memory usage12.0 GB15.8 GB

Memory %22%25%

HW Fit Score Breakdown

GPT-20B:20b

Speed

50/50

TTFT

11/20

Memory

30/30

openai/gpt-oss-20b

Speed

50/50

TTFT

0/20

Memory

30/30

Quality

GPT-20B:20b

Reasoning

19/20

Coding

17/20

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

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 GPT-20B:20b 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