Active2 developments · 2 sources · within a dayGPT-5.6 Enhances Microsoft 365 CopilotHow it developedJuly 9, 2026OpenAIWhere it startedGPT-5.6 Enhances Microsoft 365 CopilotJuly 10, 2026TechCrunch AIOpenAI's GPT 5.6 Powers Microsoft 365 CopilotGPT 5.6 is designated as the preferred model for Copilot amid reports Microsoft is building its own AI to reduce reliance on OpenAI.