openai/gpt-oss-20b

gpt_oss · 20B · MXFP4

THINKING MODEL

MacBook Pro (Apple M1 Pro)

32 GB · macOS 15.6.1

Tested on October 20, 2026

Top 30% Compare

Global Score

83 /100

Not Rec.

Hardware Fit

75/100

Quality

87/100

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Hardware

Machine: MacBook Pro
CPU: Apple M1 Pro
Cores: 10 total (8 perf + 2 eff)
Frequency: 2.4 GHz
RAM: 32 GB LPDDR5
GPU: Apple M1 Pro
OS: macOS 15.6.1
Arch: arm64
Power Mode: balanced

Performance

Tokens/sec Tokens generated per second — higher is better: 43.2
Standard deviation Variation of speed across benchmark runs — lower means more consistent: ±0.7
First chunk latency Delay before the first streamed chunk arrives from runtime: 46 ms
Time to first token How fast the model starts responding — lower is better: 30.0 s
Load time Time to load the model into memory before inference: N/A
Memory usage RAM consumed during inference — percentage of total system memory: 15.8 GB (49%)
Total tokens Total number of tokens generated across all benchmark prompts: 1708
Thinking tokens (est.) Estimated internal reasoning tokens — models with "thinking" generate more tokens: ~963

Score breakdown

Speed

50/50

Time to first token

0/20

Memory

25/30

Quality

Reasoning

19/20

Coding

14/20

Instruction following

15/20

Structured output

14/15

Math

15/15

Multilingual

10/10

Category levels

Reasoning: Strong Coding: Adequate Instruction Following: Strong Structured Output: Strong Math: Strong Multilingual: Strong

Metadata

Spec version: 0.2.1
Runtime: LM Studio
Model format: MLX
Hardware profile: BALANCED
Result hash: 726bdd53bcf21b7be2d8f9547ee0ffd6e693ac83b8b24f322837dc94f6713b4a

Interpretation

Hardware fit: 75/100. Overall suitability: NOT RECOMMENDED (Global 83/100). Category profile: Reasoning: Strong, Coding: Adequate, Instruction Following: Strong, Structured Output: Strong, Math: Strong, Multilingual: Strong.

Warnings

Model memory footprint is estimated via LM Studio CLI rather than measured from a fresh load.

Disqualifiers

Time to first token too high: 30000ms (maximum: 20705ms for BALANCED profile)

Bench Environment

Power: AC CPU load: avg 23% (peak 27%)

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