OpenAIGPT-5 miniVSOpenAIGPT-5.5 Pro
Our Take
Standardized reasoning and coding benchmarks are currently pending verification for one or both of these models. We recommend testing GPT-5 mini and GPT-5.5 Pro directly in their respective provider playgrounds to see which fits your specific prompt styles best.
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Benchmarks & Scores
Coding (swe-bench-pro)
45.7%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
81.6%graduate-level science QA
Cost & Context
Cost (per 1M tokens)98.2x cheaper
$0.69Input: $0.25 | Output: $2.00Context Window
400k tokensBenchmarks & Scores
Coding (swe-bench-pro)
N/Acomplex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)Winner (+14.6%)
96.2%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$67.50Input: $30.00 | Output: $180.00Context WindowLarger
1.05M tokensFrequently Asked Questions about GPT-5 mini vs GPT-5.5 Pro
GPT-5 mini is cheaper than GPT-5.5 Pro. GPT-5 mini has a blended cost of $0.69/1M tokens, which is about 98.2x cheaper than GPT-5.5 Pro at $67.50/1M tokens.
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