GPT 6.1 Sol Pro

GPT-6.1 Sol Pro runs the same underlying model with pro reasoning enabled. It is intended for demanding analytical and tool-assisted work, with the same text and image input support and configurable reasoning effort.

Sol Pro uses GPT-6.1 Sol in its pro reasoning mode, with effort settings from low through max.

OpenAI presents GPT-6.1 Sol for demanding coding, document analysis and application workflows, with results approaching Astra on several evaluations. The release retains Sol's standard token prices while reducing the cost of repeated cached context.

The announcement emphasizes repository work, complex PDFs and multi-step business automation. OpenAI reports stronger results than earlier Sol across those tasks, alongside improvements in computer use and scientific workflows. These are the lab's measured comparisons, rather than guarantees for every task.

The lab also reports fewer factual mistakes and better adherence to user instructions. Its factuality tests deliberately use difficult prompts flagged for earlier errors, so their rates do not describe ordinary usage. Astra remains OpenAI's recommendation for the hardest scientific research.