GPT-5.5
OpenAI
openai/gpt-5.5GPT-5.5 is OpenAI's April 2026 flagship model, described as its most intuitive yet at understanding intent and carrying more of a task itself. It excels at writing and debugging code, research, data analysis, and multi-step agentic tool use, with reduced hallucination in sensitive domains like law, medicine, and finance.
Cost rate
6x
Context
1.1M
Released
Apr 24, 2026
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The categories where this model ranks highest.