OpenAI's flagship frontier model for complex professional work. Official API docs position Sol as the default starting point for complex reasoning and coding. Features a 1.05M token context window, 128K max output, image understanding, and max reasoning effort. The OpenAI API also exposes the alias 'gpt-5.6' for this model family default. OpenAI documents additional native tools for this family, but Aisle currently exposes the verified web search path only.