The Free Copilot in Your Microsoft 365 Just Got a Speed Bump — and You Can't Turn It Off

If your team has been using the AI chat assistant built into Microsoft 365 — asking it to rewrite emails, summarize documents, or pull a quick answer out of a long thread — you should know that the rules changed this week. Quietly, without a headline announcement, Microsoft began capping what it calls the "free" version of that tool. Some of your people may already be seeing a message that a feature is temporarily unavailable. That's not a bug. It's policy.

What Is Copilot Chat, and Why Did Anyone Think It Was Free?

Copilot Chat is the AI assistant that Microsoft bundles into Microsoft 365 subscriptions at no extra charge. Think of it as a capable conversation partner that sits inside your everyday apps — web browser, desktop, and mobile. It has become an everyday tool for many employees: rewriting an email, summarizing a text, quickly looking something up. No separate license required. No credit card. It just works — or it did.

The paid version — called Microsoft 365 Copilot Business for companies under 300 users — goes much further. It turns on Copilot inside the Office apps and work-based Copilot Chat grounded in your tenant's data. That means it reads your actual SharePoint files, your emails, your Teams conversations, and uses that context to give meaningful, company-specific answers. The free Copilot Chat does not do that. What it does is give your team web-grounded AI assistance at no extra cost — which is genuinely useful, and which a lot of small businesses have leaned on.

What Changed This Week

Microsoft already uses fair-use limits for some Copilot features, such as image generation, for users without a Microsoft 365 Copilot license. Starting November 2, 2026, for organizations with 2,000 or fewer Microsoft 365 seats, and beginning November 9, 2026, for larger organizations, Microsoft is introducing fair-use limits for additional Copilot Chat features and capabilities.

That rollout — the smaller-organization wave — already hit your tenant if you have a typical small-business-sized Microsoft 365 account. The larger-org wave begins today, November 9.

A "fair-use limit" is Microsoft's term for a throttle. It is a cap on a feature that Microsoft sets and that can vary through the day. Think of it like a water utility's "fair use" policy during a drought: the tap still works, but heavy users find the pressure drops at unpredictable times.

The Part That Should Concern You: Nobody Can See the Numbers

Here is the uncomfortable part. The company is not disclosing how high those limits are. Copilot Chat is included by default in business Microsoft 365 subscriptions. The company is keeping quiet about how high they are.

Limits apply across platforms, vary daily, and cannot be adjusted by admins. So your IT person — or your managed service provider — cannot log in, check a dashboard, and tell you: "Sarah hit her limit at 2 PM yesterday." The only signal you're likely to get is a frustrated employee reporting that Copilot told them a feature is temporarily unavailable. A sharp fall in prompts among your heaviest users after November 9 is a rough proxy for limits, and the only one the report offers.

Limits can change as the product changes and new features arrive. Microsoft has also signaled that the limits may also extend to other Copilot Chat features in the future.

Why Is Microsoft Doing This?

Call it what it is: a commercial nudge. Fair-use throttling is common in AI services because inference costs real money. Running large language model (LLM) queries — the kind of AI computation that powers Copilot — is not cheap. Microsoft has been subsidizing this for every Microsoft 365 customer as a way to demonstrate value. That subsidy now has a floor. When users reach Copilot Chat fair-use limits, it might indicate interest in additional Copilot capabilities, such as Microsoft 365 Copilot and Microsoft 365 Copilot Business for small and medium businesses. Microsoft said the quiet part out loud.

So What Does This Actually Cost — in Money and Productivity?

Let's be concrete. The free tool remains free — Copilot Chat stays free, but heavy users will more often see a notice that a feature is temporarily unavailable. If your team uses Copilot Chat lightly, you may never notice a thing. If you have a handful of power users who rely on it for an hour or more a day, they will start hitting walls at unpredictable times.

The upgrade path, if you want to remove the ceiling, is a paid license. Microsoft 365 Copilot Business, for organisations of up to 300 users, lists at $21 per user per month, while Microsoft 365 Copilot Chat is included at no extra per-user cost for many Microsoft 365 users. There is currently a promotional rate: from July 1 to December 31, 2026, Microsoft is offering it at $18 per user per month on annual subscriptions for existing Microsoft 365 customers. That promotion expires at year-end — roughly seven weeks from today.

Practically speaking: a 10-person team paying the promotional rate would spend $180 per month, or $2,160 per year, to put every employee on a paid Copilot Business license. At the standard rate that becomes $2,520 a year. Whether that is worth it depends entirely on how much your team actually uses the tool — and what their time is worth when they hit a wall mid-task.

A Note on What the Paid License Actually Adds

The paid Copilot Business license is not just "more of the same without the speed bumps." It unlocks something qualitatively different: Copilot that works inside Word, Excel, PowerPoint, and Outlook with access to your company's real data. It can draft a proposal using your past proposals as context. It can summarize this month's email thread with a specific vendor. The free tier cannot do any of that — it only knows what's on the public web. If your business documents live in Microsoft 365, that distinction matters.

What You Should Do or Ask Right Now

• Identify your power users first. Ask your IT provider which employees generate the most Copilot Chat activity. Those are the people who will hit limits hardest and whose productivity is most at risk.
• Don't buy licenses for everyone reflexively. Light users may never feel this change. License the people who will actually benefit.
• Check the December 31 deadline. The $18 promotional rate on Microsoft 365 Copilot Business expires at the end of this year. If you decide to upgrade, buying before December 31 locks in a lower first-year rate.
• Ask your IT provider about the "Users Experiencing Usage Limits" view. The Partner Center announcement points resellers to a "Users Experiencing Usage Limits" view in Microsoft's AI Business Solutions & Security Partner Experience. A good managed service provider should be able to pull this for you so you're making a data-driven decision, not guessing.
• Understand what you'd actually be buying. Before spending $21 per user per month, make sure the people you're licensing know how to use Copilot in Word, Excel, and Outlook in ways that justify the cost. If they don't, that's a training conversation, not a licensing conversation.

The honest summary: Microsoft gave every Microsoft 365 customer a capable AI assistant, waited for teams to build habits around it, and is now tightening the tap to create a reason to pay more. That's a reasonable business model. It doesn't mean the upgrade is wrong — for the right employees, it's genuinely good. It just means you should make the decision on your terms, with real data, not under pressure from an invisible throttle.

— David