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OpenAI

GPT-5 mini

VS
OpenAI

GPT-5.5 Pro

Decision Recommendation

📊 Comparison Summary: GPT-5 mini and GPT-5.5 Pro present close characteristics. Review the specific benchmark scorelines below to determine which engine matches your needs.

Model Specs

GPT-5 mini

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+)
45.7%
Reasoning (gpqa-diamond)
82.8%

Cost & Performance

Cost (per 1M tokens)98.2x cheaper
$0.69Input: $0.25 | Output: $2.00
Speed1.2x faster
86 tps
Context Window
400k tokens
Model Specs

GPT-5.5 Pro

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)Winner (+13.4%)
96.2%

Cost & Performance

Cost (per 1M tokens)
$67.50Input: $30.00 | Output: $180.00
Speed
74 tps
Context WindowLarger
1.05M tokens

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