SECP Streamlines Digital Onboarding for Pakistan’s New Investors
August 30, 2026
Microsoft is rolling out Claude Opus 5 across Word, Excel, PowerPoint, Copilot Chat, Cowork, and Copilot Studio, deepening its multi-model strategy beyond OpenAI’s GPT models.
Microsoft’s productivity empire is no longer a single-AI household. Microsoft is rolling out Anthropic’s Claude Opus 5 through the model selector in Word, Excel, PowerPoint, Copilot Chat, Copilot Cowork, and Copilot Studio, giving hundreds of millions of Microsoft 365 users the ability to choose Claude for their AI-assisted work directly inside the apps they use every day.
The integration marks a significant acceleration of a partnership that began in September 2025, when Microsoft first added Anthropic models to Copilot. At that time, Claude Opus 4.1 became available in the Researcher agent, while Claude Opus 4.1 and Sonnet 4 were added to Copilot Studio.
The latest rollout expands that footprint considerably, bringing Claude Opus 5 into Microsoft’s core document and communication applications for the first time.
The use cases Microsoft has defined for Claude Opus 5 within its ecosystem are telling. In Copilot Chat, the model is positioned for open-ended problems, planning, comparing options, and tasks that demand stronger reasoning, capabilities where Opus 5’s extended thinking mode has consistently outperformed earlier models.
In Copilot Cowork, Claude can be applied to longer-running projects involving multiple files and tools simultaneously. In Copilot Studio, businesses can build AI agents powered by Opus 5 for reasoning, workflow automation, and multi-step task execution.
The Researcher agent, already available within Microsoft 365 Copilot, now supports both GPT and Claude models, with administrators able to enable Anthropic models so users can select Claude for complex research drawing on the web as well as organisational files, emails, meetings, and chats.
The broader strategic shift at Microsoft is hard to miss. GPT-5.6 was added to Microsoft 365 Copilot in July 2026, yet within weeks Microsoft is actively expanding Claude’s presence across the same platform. The message is deliberate: Microsoft is building a multi-model environment where users choose the best tool for the task rather than defaulting to a single provider.
For Anthropic, the expansion is a distribution milestone of enormous consequence. Microsoft 365 serves over 400 million paid seats globally. Claude Opus 5 reaching the model selector in Word and Excel is not a product launch for early adopters; it is a mainstream deployment that puts Anthropic’s most capable model inside the daily workflows of governments, enterprises, universities, and individual professionals worldwide.
The AI productivity race just entered a new phase. The question is no longer which company makes the best model. It is which model users reach for when they open a blank document.
