Microsoft 365 is where most enterprise work actually happens — Word documents, Teams chats, Outlook emails, OneDrive files. Switching between them manually is the hidden time cost of office work.
Companion connects to the Microsoft 365 ecosystem and lets you work across Word, Teams, and OneDrive with natural language. Here's how.
What you need
- Companion installed (download here)
- An OpenRouter API key (free, pay per use)
- A Microsoft 365 account (personal or business)
Step 1: Connect Microsoft 365
Open Settings → Integrations in Companion's sidebar. Find Microsoft Office (or Microsoft 365) and click Connect.
Authorize via Microsoft OAuth. You'll select which services to connect — Word, Teams, OneDrive, or all three. Companion only accesses what you explicitly authorize.
Step 2: Your first automation
Start with document creation in Word:
Create a Word document called "Project Proposal — Acme Corp" with sections for Executive Summary, Scope of Work, Timeline, and Pricing. Save it to my OneDrive in the "Proposals" folder.
Companion creates the structured document with correct formatting and saves it to the right location. You open it and fill in the specifics — the framework is already there.
Or for Teams:
Summarize the last 24 hours of messages in the "Product Team" Teams channel. What decisions were made? What's still open?
Companion reads the Teams history and gives you a prioritized digest — the same experience as the Slack integration, but for Microsoft environments.
What it costs
Word document creation uses roughly 1,000–3,000 tokens depending on length. Teams summarization is similar to Slack — 2,000–8,000 tokens for an active channel. At Claude Haiku rates, a full day of Microsoft 365 automations costs well under $0.05. For context: Microsoft Copilot costs $30/user/month. With Companion BYOK, you pay only for what you actually use.
More workflows
Report generation: "Write a quarterly review report for Q1 2026 in Word. Use the sales data I'll paste below. Format it with a cover page, executive summary, charts section placeholder, and recommendations."
Meeting notes to Word: "Take these notes I'm about to dictate and format them into a professional Word document with an agenda, decisions, and action items table"
Teams channel management: "Post an update to the 'Marketing' Teams channel: 'The new website went live today. Please review the blog section and send feedback by Friday.'"
OneDrive organization: "List all Word files in my OneDrive 'Drafts' folder that haven't been modified in 30 days. I'll decide which ones to archive."
Combine with email: "Take the Word proposal in my OneDrive and draft an Outlook email to the Acme Corp contact attaching it, with a brief intro covering the key points"
Cross-app workflow: "Read the meeting notes in the Teams 'Design' channel from yesterday. Create a Word action items document from them and share it to the channel."
For organizations deeply embedded in Microsoft 365, Companion acts as the connective layer — moving information between Teams, Word, and Outlook without the copy-paste ritual.
Achmad Bifari is Creative Designer and Social Manager at Companion. He writes the tutorials and runs @companionbyaios.