GPT-5.6 Sol is OpenAI’s most advanced reasoning model, optimized for complex knowledge work and multi-step problem solving.
The model is designed to handle large-scale codebases, technical documentation, research materials, and enterprise workflows with improved accuracy and consistency. It can analyze information, plan tasks, use tools, and assist users throughout the complete workflow from research and planning to execution.
With powerful reasoning capabilities, long-context understanding, and AI agent support, GPT-5.6 Sol serves as an advanced AI partner for developers, researchers, and organizations working on sophisticated projects.
GPT-5.5 Pro
100 I’ve been using GPT-5.5 Pro with a few colleagues for the past several weeks, mostly on the kinds of jobs where regular chatbots tend to fall apart: long documents, messy research questions, code debugging, and tasks that need more than one or two steps of reasoning.
OpenAI
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