Microsoft and Google took genuinely different approaches to charging for workplace AI, and that pricing structure matters as much as any feature comparison. Microsoft bolted Copilot on as a separate line item. Google folded Gemini into the price of Workspace itself. Neither approach is obviously better, but they produce very different bills depending on how your organization is already set up.
Microsoft 365 Copilot: The Add-On Model
Microsoft 365 Copilot costs $30 per user per month, and that price sits on top of an existing Microsoft 365 E3 or E5 license, not instead of one. An organization already paying for M365 seats adds Copilot as an additional charge; there's no bundled tier where you get the AI features folded into a higher base price the way some competitors structure it. For a 100-person organization, that's $3,000/month in Copilot fees alone, separate from whatever the underlying M365 licenses already cost.
What that $30/month buys is deep integration across the suite: Copilot summarizes Outlook email threads, generates PowerPoint slides from a prompt or an outline document, writes Excel formulas from a plain-language description, drafts Word documents, and searches Teams conversation history for context. The enterprise version can query SharePoint content directly, with permission-aware guardrails that respect existing access controls, at least in theory. Microsoft's own adoption guidance is candid that this SharePoint integration is also where things go wrong most often in practice: without careful data governance work before rollout, Copilot can surface sensitive content to users who technically had file access but never actually knew the content existed or intended to see it. IT teams deploying Copilot at scale treat the pre-rollout permissions audit as mandatory, not optional.
Below the enterprise tier, Copilot Pro is available standalone at $20/month for individuals, and a free tier exists at copilot.microsoft.com with limited GPT-4o access and Bing search grounding, functionally a ChatGPT-adjacent product without needing an M365 subscription at all. For anyone not already inside the Microsoft ecosystem, there's little reason to pick this over ChatGPT directly.
Google Workspace and Gemini: The Bundled Model
Google took a different path. Rather than pricing Gemini as a separate per-user add-on the way Microsoft prices Copilot, Google Workspace has folded Gemini's core features directly into its existing plan tiers. Business Standard, the mid-tier Workspace plan most small and mid-size organizations land on, runs $16.80/user/month billed monthly or $14/user/month billed annually, and Gemini's writing assistance, email drafting, and document generation are included in that price rather than billed on top.
That's a meaningfully different cost structure than Microsoft's. An organization moving to Google Workspace at the Business Standard tier gets AI features built into a subscription that costs less per seat than an M365 E3 license alone, before any Copilot add-on is even considered. The tradeoff is depth: Gemini's Workspace integration covers Gmail, Docs, Sheets, Drive, and Meet from a sidebar panel, which is a real and useful feature set, but it doesn't reach the same level of cross-app orchestration Copilot claims across the full Microsoft suite, particularly around Excel formula generation and PowerPoint deck creation, where Copilot's specific tooling is more mature.
Google's AI plans page also confirms that Google has restructured its consumer-facing Gemini subscriptions since the "Gemini Advanced" branding era, now running Google AI Plus, Google AI Pro, and Google AI Ultra tiers built on the Gemini 3.1 model family. That consumer restructuring runs in parallel to the Workspace bundling and matters mainly for individual power users outside a company Workspace deployment; the organizational pricing story is the Workspace tier price itself.
The Real Comparison Is About Total Cost, Not Feature Parity
Comparing these two on features alone misses the more important number: what does a seat actually cost once AI is included. For an organization not yet committed to either ecosystem, Microsoft's model means budgeting for M365 licensing plus a separate $30/month Copilot line, while Google's model means the AI features are already priced into a Business Standard seat that costs less than an M365 license by itself. At 100 users, that's a meaningful gap: roughly $3,000/month in incremental Copilot cost on the Microsoft side, against $0 incremental cost for Gemini's core features on a Google Workspace Business Standard deployment.
That comparison isn't entirely fair to Microsoft, since M365's underlying suite (particularly Excel and PowerPoint at the depth serious business users need) has capabilities Workspace's equivalents don't fully match regardless of AI. Organizations aren't switching productivity suites purely to save on an AI add-on. But for a company already deciding between the two suites for other reasons, the AI pricing difference is a real tiebreaker worth putting in the spreadsheet.
Governance Is the Part Both Vendors Undersell
Neither company's marketing leads with the operational risk, but it's the part IT teams actually lose sleep over. Copilot's SharePoint search reaching content users technically had access to but never knew existed is a real, documented deployment problem, not a hypothetical. Gemini's Workspace sidebar reading across Gmail, Docs, and Drive raises the same category of question: what happens when an AI assistant surfaces information across documents a user has stale or overly broad permissions on. Both platforms have permission-aware guardrails; neither guardrail is a substitute for actually auditing access before turning the AI on. Any enterprise rollout of either tool should treat a permissions audit as a pre-launch requirement, not a nice-to-have.
Switching Ecosystems Is the Real Cost, Not the AI Add-On
Neither Copilot's $30/month nor Gemini's bundled pricing is the actual barrier to switching between Microsoft and Google for most organizations. The real cost is migrating years of Excel-dependent financial models, PowerPoint templates built around specific macros, or SharePoint document libraries with permission structures nobody wants to rebuild from scratch. Companies evaluating this comparison because of AI pricing specifically should separate that question from the much larger, much more disruptive question of switching productivity suites entirely.
For organizations already committed to one ecosystem for reasons unrelated to AI, this comparison mostly answers "should we pay for the AI add-on" rather than "which suite should we use." On Microsoft, that's a real yes-or-no budget line at $30/user/month. On Google, the AI features already shipped with the Workspace subscription you're paying for regardless, which removes the decision entirely for existing Workspace customers: there's no separate line item to evaluate or cut in a budget review, since it's already baked into the seat cost.
Who Should Use Which
Choose Microsoft 365 Copilot if your organization is already standardized on M365 E3 or E5 licensing and the specific integrations (Excel formula generation, PowerPoint deck drafting, Outlook summarization) map to daily workflows your teams already run. Budget for the $30/user/month as a genuine additional line item, and do the SharePoint permissions audit before rollout, not after the first uncomfortable surprise.
Choose Google Workspace with Gemini if you're either already on Workspace or evaluating it fresh, and want AI features included in the base subscription price rather than metered as a separate add-on. The $16.80/month (or $14 annual) Business Standard price with Gemini bundled in is a genuinely different value proposition than paying for M365 plus a Copilot add-on, especially for smaller organizations where every per-seat dollar matters more.
Neither platform is a reason to switch productivity suites on its own. For a broader look at how these assistants compare to ChatGPT and Claude outside the enterprise-suite context specifically, the ChatGPT vs Claude vs Gemini comparison covers the standalone chatbot comparison, and the best free AI tools roundup covers where the free tiers of each ecosystem actually stand.