New Delhi, July 10 -- OpenAI has expanded its enterprise AI strategy with the launch of GPT-5.6 and ChatGPT Work, while announcing that its latest flagship model will become the default AI model powering Microsoft 365 Copilot.

The move deepens OpenAI's partnership with Microsoft and brings GPT-5.6 to productivity applications including Word, Excel, PowerPoint, Copilot Chat, and Cowork, giving enterprise users access to improved reasoning, coding, content creation, and workflow automation without changing the applications they already use.

The announcement comes as competition intensifies among enterprise AI platforms, with Microsoft, Google, Anthropic, and Amazon racing to embed AI deeper into workplace productivity tools.

OpenAI said ...