OpenAI's most capable GPT-5.6 model for the hardest reasoning, research and coding problems.
Model availability and access depend on your workspace and plan.
About the model
OpenAI's most capable GPT-5.6 model for the hardest reasoning, research and coding problems.
What you get back. The response appears directly in your Relam chat, where you can continue the conversation.
Capabilities & limits
Ask questions, give instructions and continue with follow-up messages in a conversation.
Ask the model to examine supplied information and develop a written analysis.
GPT-5.6 Sol lists research among its supported capabilities.
Use the model for code-focused questions and programming tasks. Review generated code before using it.
Work on written drafts, revisions and wording through conversational instructions.
The catalogue lists image understanding as a supported model capability. Available attachment controls depend on your workspace.
GPT-5.6 Sol has a 1,050,000-token context window. This is the model’s capacity for the text it considers in a request, including prompts and conversation context. Tokens are pieces of text, rather than a word or page count. The amount of context sent by your workspace can be lower.
Questions & answers
The catalogue sets a maximum output of 128,000 tokens for GPT-5.6 Sol. This is the response budget, distinct from its context window. Responses can be shorter depending on your request and the limits applied by your workspace.
GPT-5.6 Sol is listed as a reasoning-capable model. Its configured reasoning levels are none, low, medium, high, xhigh, max. The default level is medium. Available controls depend on your workspace.