Anthropic has updated its Claude add-ins for Microsoft Excel and PowerPoint, giving paid users on Mac and Windows a shared context layer across both applications. The update is available starting March 11, 2026.
Previously, users working across Excel and PowerPoint had to manually copy instructions and context between sessions. Now, Claude maintains a single continuous session that reads live spreadsheet data and writes content into presentations simultaneously — no re-prompting required.
Anthropic illustrated the practical scope in a press release: “A financial analyst can ask Claude to pull comparable company financials from an open workbook, build out a trading comps table in Excel, drop the valuation summary into the pitch deck, and draft the email to the MD — without switching tabs or re-explaining the dataset at each step.”
Skills and Repeatable Workflows
The launch also introduces Skills — saved, repeatable workflows embedded directly in the Excel and PowerPoint sidebars. Teams can store standardized processes as one-click actions accessible across the entire organization.
“Workflows that previously lived in one person’s head become one-click actions available to the whole organization,” the company said.
Anthropic ships the add-ins with a preloaded starter set of Skills:
- Excel: Auditing models for formula errors, populating DCF and LBO templates, and cleaning messy data ranges
- PowerPoint: Building competitive landscape decks and reviewing investment banking materials for narrative alignment
Skills are distinct from Instructions, which set persistent user preferences — such as number formatting rules in Excel or writing style guidelines in PowerPoint — carried across sessions.
According to the announcement, every Skill functions inside the add-ins the same way MCP connectors do.
Enterprise Access and Deployment
The add-ins can now be accessed through a Claude account or through an existing LLM gateway routing to Claude models on Amazon Bedrock, Google Cloud Vertex AI, or Microsoft Foundry. That flexibility lets enterprises plug the tools into compliance and cloud infrastructure already in place.
The Excel add-in dates back to an October 2025 release. The shared context capability and Skills represent the most significant expansion since that initial launch.
The timing puts Anthropic in direct competition with Microsoft‘s Copilot Cowork — a capability the software giant introduced on Monday that enables agents to complete tasks across Office applications including Excel and PowerPoint. Microsoft openly stated Copilot Cowork was built in conjunction with Anthropic, which also powers it in part.
Anthropic released its own standalone Claude Cowork application for Mac and Windows earlier this year, giving Claude autonomous access to files across a user’s computer. The Office add-in update now extends that continuity specifically into the two most widely used enterprise productivity applications.
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