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GPT-5.5 Pro

Multimodalby OpenAI·Model page

OpenAI's GPT-5.5 Pro reasoning model with a 1M-token context for multimodal text, image, and file tasks.

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GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...

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OpenAI
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openai
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AccessClosed Source
Context1.1M tokens
Input price$30 /1M
Output price$180 /1M
Knowledge cutoffDec 1, 2025
CreatedApr 24, 2026
Updated
View on Hugging Face
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GPT-5.5 Pro — AI Model Details | Applied