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GPT-5.5 Pro
OpenAI · proprietary · gpt-5.5-pro
GPT-5.5 Pro is the Pro variant of GPT-5.5, designed for the hardest questions and highest-accuracy work. It scales reasoning further than GPT-5.5 with significantly more comprehensive, well-structured, and accurate responses, with especially strong performance in business, legal, education, science, and data analysis. Priced at $30/1M input and $180/1M output tokens with a 1M context window.
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Benchmark scores
| Benchmark | Score |
|---|---|
| BrowseComp | 0.90 |
| Humanity's Last Exam | 0.57 |
Pricing
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