GPT-5.5 Pro
🔬 PreviewHigher-compute GPT-5.5 variant for the most difficult reasoning and coding tasks
Context Window
1M
Input Price
$30.00/1M
Output Price
$180.00/1M
Released
Apr 23, 2026
Capabilities
textvisionreasoningcodeextended-thinking
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Get API Access →Version History
Apr 23, 2026New Release
GPT-5.5 Pro introduced as the high-compute GPT-5.5 mode for harder questions and higher-accuracy work
Apr 23, 2026Pricing Change
API pricing announced at $30.00 per 1M input tokens and $180.00 per 1M output tokens