What is GPT-5.6 Sol?
GPT-5.6 Sol is a reasoning model from OpenAI, released on 2026-06-26. It accepts text and image input and returns text output. The recorded context window is 1.05M, and the recorded maximum output is 128K. Cataloged capabilities include Reasoning model, Multilingual, and Coding model. The model weights are proprietary and are not published for download. Use the linked references to confirm current access, licensing, and provider-specific limits.
