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openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Jul 17, 2026 · Apple M5 Max

llama-3.1-8b-instruct

LM-STUDIO GGUF

llama · 8B · Q8_0

Excellent

Apr 26, 2026 · AMD Ryzen 5 5500

Global Score
83 vs 81
Hardware Fit
80 vs 100
Quality Score
84 vs 73

Hardware

openai/gpt-oss-20b llama-3.1-8b-instr…
MachineMacBook ProASUS
CPUApple M5 MaxAMD Ryzen 5 5500
Cores1812
RAM64 GB31 GB
GPUApple M5 MaxNavi 44 [Radeon RX 9060 XT]
OSmacOS 27.0Nobara Linux 43
Archarm64x64
Power Modebalancedperformance

Performance

openai/gpt-oss-20b llama-3.1-8b-instr…
Tokens/sec131.735.6
First chunk7 ms52 ms
TTFT30.0 s256 ms
Load timeN/AN/A
Memory usage15.8 GB8.6 GB
Memory %25%28%

HW Fit Score Breakdown

openai/gpt-oss-20b

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

llama-3.1-8b-instruct

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

Quality

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

llama-3.1-8b-instruct

Reasoning
13/20
Coding
17/20
Instruction
13/20
Structured
15/15
Math
5/15
Multilingual
10/10
Reasoning: Adequate Coding: Strong Instruction Following: Adequate Structured Output: Strong Math: Weak Multilingual: Strong
View openai/gpt-oss-20b details | View llama-3.1-8b-instr… details

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$ npm install -g metrillm@latest
$ metrillm

Requires Node 20+ and Ollama or LM Studio running

Or run without installing: npx metrillm@latest