ChatGPT Now Works Inside Microsoft Word: The 20-Minute Account Check Before Your Team Opens a Client Contract With It
OpenAI launched a ChatGPT add-in for Word on September 17, and it works on every plan, including Free. Run this check so a client document never lands in someone's personal account.
What shipped. On September 17, 2026, OpenAI released a ChatGPT add-in for Microsoft Word. It opens as a sidebar and can draft from your notes, summarize a document, revise the text you select, proofread, and fix headings and formatting without leaving Word. OpenAI lists it as available on all ChatGPT plans, including Free.
Why it matters to you. Proposals, SOPs, bids, and contract summaries get faster. The catch: whichever ChatGPT account is signed into that sidebar is the account that sees the document. If someone on your team signs in with a personal Free account, the client agreement or employee file they asked it to summarize now sits in a chat history you do not control, under that account's training setting.
What it's worth. The upside is hours back on every document your team writes. The downside is one client contract in a personal account. Twenty minutes today decides which one you get.
The 20-minute check.
- Pick the approved account. Decide the one ChatGPT account your company allows for work. A business workspace with training on your data turned off is the right default. Write it down in one sentence.
- Find out who already has it. Ask everyone who writes documents to open the add-ins list in Word and tell you two things: is ChatGPT installed, and which account is signed in. Anyone on a personal account signs out today.
- Check the admin side. If you run Microsoft 365 with an admin login, open the Microsoft 365 admin center and look under Integrated apps. That is where you see which add-ins are deployed to your team and where you can allow, block, or deploy them for everyone.
- Draw the document line. Use the prompt below to write a one-page rule for which documents can go into the sidebar.
- Test on a safe file first. Open an old SOP or a blank template with no client data. Ask the sidebar to summarize and tighten it. Read every change before you keep it, so your team sees how much it rewrites.
Paste this into your business AI workspace:
I run a [type of business] with [number] people who write documents in Microsoft Word. We are turning on the ChatGPT add-in for Word. Our approved account is [business workspace name, or "none yet"]. The documents we handle include [list document types, e.g. proposals, client contracts, employee files, bids, invoices]. Write a one-page rule my team can follow: which document types are fine to use the add-in on, which need names and numbers removed first, and which never go into any AI tool. Add a 3-step check to run before using it on any document. Plain words, under 250 words. Do not invent laws or regulations. Flag anything where I should ask my attorney or insurance broker.
Keep it private. That prompt only needs document types. Never paste a real client document to write the rule.
Pairs well with: the Work Account Rule, which moves your team's AI use off personal logins across every tool.