Microsoft Copilot (Microsoft 365): Model Selector in Microsoft 365 Copilot

The Model Selector in Microsoft 365 Copilot gives users more control over reasoning depth, enabling automatic reasoning for simple tasks and explicit control when desired. The three modes that are supported as part of GPT-5 are: Auto (default) - system decides how long to think, Quick response - answers right away, Think deeper - Thinks longer for better answers.