OpenAI
GPT-5 nano
VS
OpenAI
GPT-5.5 Pro
Decision Recommendation
⚖️ Trade-off decision: Choose GPT-5.5 Pro if you need the absolute highest accuracy for complex logic and coding. Choose GPT-5 nano if you want to optimize your budget, as it is 490.9x cheaper.
Model Specs
GPT-5 nano
Benchmarks & Scores
Coding (swe-bench-pro)
N/AReasoning (gpqa-diamond)
67.6%Cost & Performance
Cost (per 1M tokens)490.9x cheaper
$0.14Input: $0.05 | Output: $0.40Speed1.9x faster
137 tpsContext Window
400k tokensModel Specs
GPT-5.5 Pro
Benchmarks & Scores
Coding (swe-bench-pro)
N/AReasoning (gpqa-diamond)Winner (+28.6%)
96.2%Cost & Performance
Cost (per 1M tokens)
$67.50Input: $30.00 | Output: $180.00Speed
74 tpsContext WindowLarger
1.05M tokensWant to customize weights or add more models?
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