GPT-5.5

About GPT-5.5

GPT-5.5 represents OpenAI's latest fully retrained foundation model, launched April 23, 2026, introducing parallel reasoning capabilities and expanded context processing for advanced conversational AI. This state-of-the-art language model features a 256K context window enabling deeper document analysis and conversation history retention, supporting more nuanced and contextually aware responses. GPT-5.5 operates on a freemium model with API pricing at $5 per million input tokens and $30 per million output tokens, making advanced AI capabilities accessible to developers and organizations of all scales. The model's parallel reasoning feature, available in Pro mode, enables simultaneous exploration of multiple solution paths, improving complex problem-solving and analytical tasks. Users benefit from native multimodal capabilities supporting text, images, and other content types within unified conversations, eliminating friction from juggling separate specialized models. GPT-5.5 serves researchers, developers, enterprises, and professionals requiring state-of-the-art reasoning and extended context understanding. The first fully retrained foundation model since GPT-4.5, GPT-5.5 represents significant advancement in capabilities rather than incremental improvements, delivering measurably better performance across reasoning, analysis, and creative tasks. Organizations seeking cutting-edge AI capabilities with transparent API pricing will find GPT-5.5's combination of advanced reasoning, extended context, and accessible pricing compelling for embedding intelligent assistance throughout their applications and workflows.

Best For

• •Parallel Reasoning
• •Multimodal Processing
• •Advanced Analysis

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