Claude for Microsoft 365: What's Actually Available in 2026
“Claude for Microsoft 365” sounds like one product. It’s actually three — shipped by two different companies — and they get conflated constantly. One is Anthropic’s suite of Office add-ins. One is a connector that pipes your M365 data into claude.ai — read-only by default, with optional admin-enabled write tools. One is Microsoft letting admins run Claude as the model inside parts of Copilot. They do very different things, and once you separate them, a clear pattern emerges: across all three, Claude assists but doesn’t run autonomously — it reads, drafts, and generates, and even where the connector can now make changes, an admin has to switch it on and you still drive every step; nothing fires on a trigger. This is the honest map of what’s real in 2026, and what to use if you need an AI that actually does the work.
The three things people mean by “Claude for Microsoft 365”
1. Claude for Microsoft 365 — Anthropic’s Office add-ins
This is the product Anthropic literally named “Claude for Microsoft 365.” It’s a suite of add-ins that put Claude inside Office apps, installed from the Microsoft Marketplace. Per Anthropic’s own page, the status splits by app: Claude for Excel, Word, and PowerPoint are generally available on paid Claude plans, while Claude for Outlook is in beta.
What they do:
- Excel — reads and writes cells, builds and edits spreadsheets, explains formulas, and works through analysis with you. Claude for Excel covers the citations, the formula-aware edits, and the macro gap in detail.
- Word — drafts and edits documents with tracked changes you can accept or reject. Claude for Word covers the redline model and the build-number requirement that catches people out.
- PowerPoint — generates and revises slides. Claude for PowerPoint covers single-slide edits and native charts.
- Outlook — reads your inbox, summarizes threads, reads attachments, and drafts replies and calendar invites (but never sends them on its own — every draft waits for your click).
These are real “Claude does work inside your Office app” tools. Since March 2026 a setting called Office agents lets one conversation span them, so an Excel analysis can feed a PowerPoint deck without you copying anything across. The boundary: they operate inside an app, on files you already have open, in a session you drive, and nothing about them reacts to what lands in your mailbox.
2. The Microsoft 365 Connector for Claude — read by default, optional write tools
Separate product, separate purpose. The M365 connector lets claude.ai read and search across your Outlook email and calendar, Teams, SharePoint, and OneDrive — so you can ask Claude questions about your company’s data in a normal chat. It shipped read-only, but on July 7, 2026 Anthropic added write tools: with them enabled, Claude can “draft, send, and organize email, manage calendar events, update mailbox settings, and create and update files in OneDrive and SharePoint.” Write tools are off by default, though — every email Claude sends carries an agent-initiated attribution header, attachments aren’t supported, and Teams stays read-only.
It’s available on all Claude plans (Free through Enterprise). Read access requires a Microsoft Entra Global Administrator to grant one-time tenant consent; write tools require a second, separate opt-in — the Entra admin must approve the expanded permissions and your Claude organization must switch them on. Out of the box it’s “give Claude read access to my work knowledge,” and only with that deliberate rollout does it become “let Claude change things.”
3. Claude as a model inside Microsoft 365 Copilot
This is the one that generates the most confusion, because here Claude is the engine behind Microsoft’s product, not an Anthropic app. Starting with a September 2025 announcement, Microsoft began letting admins enable Anthropic’s Claude models (it launched with Claude Sonnet 4 and Opus 4.1) as an option in:
- The Researcher agent in Copilot
- Copilot Studio (for building custom agents)
- Content generation in Word, Excel, and PowerPoint (admin-gated)
A few things matter here. It’s admin-controlled — a Global Administrator enables Anthropic models in the Microsoft 365 admin center, and it’s governed by Microsoft’s enterprise terms since Anthropic onboarded as a Microsoft subprocessor (on by default for most commercial-cloud tenants, off by default in the EU/EFTA/UK, and not available in government or sovereign clouds). And critically: Claude-as-a-model is not wired into Outlook email. If you draft a message with Copilot, you’re using Microsoft’s own model regardless of whether your tenant has Anthropic enabled.
The pattern across all three: no autonomy, no triggers
Line them up and the shared limit is obvious:
| What it does | What it doesn’t do | |
|---|---|---|
| Office add-ins | Draft, edit, generate inside an app you’re in | Run unattended; act across apps; send Outlook mail |
| M365 connector | Read & search your M365 data; with admin-enabled write tools, send email and update files | Act on its own (write tools off by default; no triggers) |
| Claude in Copilot | Power Researcher / Studio / Office generation | Appear in Outlook email; act autonomously on triggers |
There’s no event trigger anywhere in this stack. Connectors answer what you ask them, and the nearest thing to automation — Claude Cowork’s scheduled tasks — runs unattended on a fixed clock rather than in response to what lands in your inbox, with no inbox of its own to receive work. Across the whole “Claude for Microsoft 365” surface, every action is initiated by you or by a timer, and confirmed by you. For a lot of knowledge work — drafting a deck, analyzing a spreadsheet, catching up on a thread — that’s exactly right. For “handle this for me while I’m in meetings,” it isn’t built for that.
If you need an AI that acts across your stack: Carly
Carly is an AI agent platform built for the part the Claude-for-M365 surface leaves to you: actually doing the work, automatically. Each Carly agent gets its own name, email address, and memory. It works over your existing Outlook or Gmail, or as a separate colleague on your domain that people email and loop into threads like a teammate.
It takes action — and sends. Where Claude’s Outlook add-in drafts and stops, Carly handles the whole conversation: replying, proposing and confirming meeting times, sending the calendar invite, updating the CRM, following up. You’re not the bottleneck on every message.
It runs on triggers, in the cloud. Carly fires automatically — when an email arrives, when a calendar invite lands, when a Teams or Slack message hits a channel, when a form is submitted, on a schedule — with no laptop-awake requirement and no admin rollout. You build Zapier-style Workflows so the right thing happens the moment it should.
It reaches past Office. Microsoft’s surface keeps you inside Microsoft. Carly has 200+ pre-built, toggle-on integrations across 40+ categories — CRM (HubSpot, Salesforce, Pipedrive, Close), accounting (Stripe, QuickBooks, Xero), support (Zendesk, Intercom), project management (Asana, Linear, Monday), and the long tail — so a workflow can start in Outlook and finish in your CRM without leaving the agent.
Claude for Microsoft 365 vs. Carly
| Feature | Claude for Microsoft 365 (add-ins / connector / Copilot model) | Carly |
|---|---|---|
| Drafts & generates in Office apps | Yes | Yes (works over your mail) |
| Reads/searches your M365 data | Yes (connector; read-only unless an admin enables write tools) | Yes |
| Sends email autonomously | No (connector sends only when you prompt it, with admin-enabled write tools; no triggers) | Yes |
| Acts across non-Microsoft tools | No | Yes (200+ integrations) |
| Runs on automatic triggers | No | Yes |
| Has its own email address | No | Yes |
| Works with Gmail too | No (Microsoft-centric) | Yes (Outlook + Gmail) |
| Admin rollout required | Yes (Entra / M365 admin consent) | No (user toggles integrations) |
| Pricing | Paid Claude plan and/or M365 Copilot license | $35/mo |
Who each is for
Use Claude for Microsoft 365 if your work is inside Office — analyzing spreadsheets, drafting docs and decks, catching up on Outlook — and you want best-in-class AI in those apps, with a human (you) driving and confirming.
Enable Claude in Copilot if you’re an enterprise already standardized on Microsoft 365 Copilot and your admins want Anthropic models as the engine for Researcher, Copilot Studio, or Office generation.
Use Carly if you want an AI that operates like a colleague — sending email, scheduling, updating tools, and running on triggers automatically across Outlook, Gmail, and 200+ apps — without an IT rollout and without you confirming every step.
Claude is excellent inside Microsoft 365. The question is whether you need an assistant in your apps, or a teammate that handles the work between them.
Frequently Asked Questions
Is “Claude for Microsoft 365” a Microsoft product or an Anthropic product?
Both terms get used. Claude for Microsoft 365 (the Office add-ins for Excel, Word, PowerPoint, and Outlook) is an Anthropic product. Claude models inside Microsoft 365 Copilot is a Microsoft feature that uses Anthropic’s models as an engine option. They’re different things — see the breakdown above.
Does Claude work inside Outlook, Word, and Excel?
Yes, through Anthropic’s Office add-ins. Claude for Excel, Word, and PowerPoint are generally available on paid Claude plans; Claude for Outlook is in beta. The add-ins draft, edit, and generate inside each app — though the Outlook one can’t send email on its own.
Can Claude take actions across my Microsoft 365, or just read and draft?
Mostly read, draft, and generate — with one exception. The Office add-ins work inside an app you’re driving, and the Microsoft 365 connector is read-only until an admin enables write tools (added July 7, 2026), which let Claude send email and update OneDrive/SharePoint files. But even then there are no event triggers — Claude acts when you ask or when a scheduled task fires, never on an arriving message. To have AI send email, update records, and act across tools automatically, you need an agent platform like Carly.
Is Claude available in Microsoft 365 Copilot?
Yes, as an admin-enabled model option in the Researcher agent, Copilot Studio, and Word/Excel/PowerPoint content generation — but not in Outlook email. It requires a Global Administrator to enable Anthropic models, and availability varies by region (off by default in the EU/EFTA/UK, unavailable in government and sovereign clouds).
What’s the best Claude for Microsoft 365 alternative for autonomous work?
Carly. It works over Outlook (and Gmail), gives each agent its own email address, sends and schedules on its own, runs on automatic triggers, and connects to 200+ tools beyond Office — the autonomous, cross-app action the Claude-for-M365 surface doesn’t provide.
More: Claude for Outlook · Claude vs Carly · Claude alternatives · Claude Cowork alternatives · Google Gemini alternatives · Best AI email agents · Best AI tools for executives · What are AI agents
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