Google’s Gemini app crossed 750 million monthly active users by Google’s Q4 2025 earnings call in February 2026, according to Alphabet, while Microsoft’s Copilot reached 20 million paid enterprise seats across Microsoft 365 by April 2026, per Microsoft. Those two numbers frame the whole comparison: one assistant won the consumer install base, the other won the paid seat at work. Both run on frontier-class models inside a dominant productivity suite, and the right pick depends far more on which ecosystem you already use than on any single benchmark.
Key Takeaways
- Google’s Gemini app reached 750 million monthly active users, up from 650 million the prior quarter and 400 million in May 2025, according to Alphabet.
- Microsoft 365 Copilot crossed 20 million paid enterprise seats, with paid seats rising by 5 million in a single quarter, per Microsoft.
- Gemini runs on Google DeepMind’s Gemini 3 family, announced November 18, 2025, while Copilot’s Smart mode uses OpenAI’s GPT-5 model with real-time routing.
- Google AI Pro provides the Gemini 3 Pro model, 4x higher usage limits than free, and 5 TB of cloud storage.
- Microsoft retired the standalone Copilot Pro plan in Late 2025, folding it into Microsoft 365 Premium, while enterprise Copilot stays an add-on requiring a Microsoft 365 licence.
- More than 60% of Fortune 500 companies now have at least 10,000 Copilot seats.
- Microsoft incorporated OpenAI’s GPT-5 across Copilot on August 7, 2025, with a Smart mode that routes between models in real time.
Editor’s Choice
- Gemini‘s app reach of 750 million monthly active users is the largest consumer footprint of any major standalone AI assistant.
- Copilot‘s 20 million paid seats sit inside Microsoft 365, with paid seats up 5 million in a single quarter.
- Gemini 3 provides a 1 million-token context window across the Gemini 3 Pro, Flash and Deep Think variants.
- An Accenture deal for over 740,000 seats was described as Microsoft’s largest Copilot win to date.
- Google made Gemini 3 Flash the default model in the Gemini app on December 17, 2025.
What Is Google Gemini?
Google Gemini is the consumer and developer AI assistant built on Google DeepMind’s Gemini 3 family, which Google calls its most intelligent model and announced on November 18, 2025, according to Google. Gemini 3 combines the multimodality and long context of Gemini 1 with the thinking, reasoning, and native tool use that Gemini 2 added as a foundation for AI agents. The assistant spans a free tier, paid consumer plans, and deep hooks into Google Workspace.
Gemini’s reach comes from distribution. According to Alphabet, the Gemini app grew from 400 million monthly active users in May 2025 to 750 million by Google’s Q4 2025 earnings call in February 2026. That curve reflects Google’s structural advantage: Gemini ships inside Search, Android and Workspace, so adoption rides on surfaces billions of people already open daily. For readers weighing the broader category, our roundup of the best generative AI platforms shows how that distribution edge compares against rivals.
Best for raw consumer reach: Gemini sits inside Search, Android, Chrome and Gmail, which is why its app passed 750 million monthly users faster than any standalone rival.
Pros
Largest consumer install base of any standalone AI assistant- Single, predictable model stack from Google DeepMind
- 1 million-token context window for long documents and codebases
- Deep, native Google Workspace integration (Gmail, Docs, Drive)
- Free tier includes Deep Research, Gemini Live and Gems
Cons
Strongest features assume you live in the Google ecosystem- Enterprise governance story is younger than Microsoft’s
- Consumer tiers can be confusing (Free, Plus, Pro, Ultra)
What Is Microsoft Copilot?
Microsoft Copilot is the AI assistant embedded across Windows, the web and the Microsoft 365 work apps, powered mainly by OpenAI models. According to Microsoft, it incorporated OpenAI’s GPT-5 across Copilot’s consumer, developer and enterprise offerings on August 7, 2025, with a new Smart mode that uses the latest GPT-5 model. Copilot’s default Smart mode uses real-time model routing, sending simple queries to a fast, high-throughput model and complex tasks to a deeper reasoning model.
Copilot’s scale tells an enterprise story rather than a consumer one. Microsoft reported on April 29, 2026, that Microsoft 365 Copilot crossed 20 million paid enterprise seats, with paid seats rising by 5 million in the quarter. An Accenture deal for over 740,000 seats was described as Microsoft’s largest Copilot win to date.
Microsoft’s bet is that the assistant is most valuable where the work already happens, so it sells Copilot as a layer on top of the Office apps rather than a destination of its own. The best AI tools by category roundup puts that work-surface strategy alongside the standalone chat assistants.
Best for Microsoft 365 shops: Copilot lives inside Word, Excel, PowerPoint, Outlook and Teams, so its value compounds for teams already standardised on Microsoft 365.
Pros- Embedded directly in Word, Excel, PowerPoint, Outlook and Teams
- Backed by OpenAI’s latest models plus selectable Anthropic models
- Mature enterprise governance, compliance and admin controls
- Agentic features in core Office apps are generally available
- Same data-residency and security posture as Microsoft 365
Cons- Strongest tier requires an existing Microsoft 365 licence
- Standalone Copilot Pro was retired, narrowing direct purchase paths
- Per-seat enterprise pricing adds up fast at scale
Gemini vs Copilot at a Glance
Gemini leads on consumer reach with 750 million monthly active users, while Copilot leads on monetised enterprise depth with 20 million paid seats inside Microsoft 365, according to each company’s most recent earnings disclosures. The table below maps the two assistants across the dimensions that drive a buying decision.
| Dimension | Google Gemini | Microsoft Copilot |
|---|---|---|
| Core model | Gemini 3 (Pro, Flash, Deep Think) | OpenAI GPT-5 Smart mode + Anthropic option |
| Model vendor | Google DeepMind (single-vendor) | OpenAI plus selectable Anthropic |
| Context window | 1 million tokens | Depends on routed model |
| Scale metric | 750 million app MAU | 20 million paid M365 seats |
| Lives inside | Google Workspace, Search, Android | Microsoft 365 (Word, Excel, Teams) |
| Strongest tier | Google AI Ultra | Microsoft 365 Copilot (enterprise) |
| Standalone purchase | Yes, direct consumer tiers | Enterprise tier needs M365 licence |
Source: Google and Microsoft official product and earnings disclosures, 2026
The pattern in that table is the real headline: These are not two versions of the same product but two distribution strategies aimed at different buyers.
Which Models Power Gemini and Copilot?
Gemini uses Google DeepMind’s Gemini 3 family, with Gemini 3 Pro available across the Gemini app, CLI, Android Studio and Google Workspace, while Copilot’s Smart mode uses OpenAI’s GPT-5 model with a real-time router that selects between GPT-5 and other models based on the task. Gemini runs on a single-vendor stack; Copilot runs on a multi-vendor one.
The Copilot side has grown more open over time. Microsoft 365 Copilot continues to be powered by OpenAI’s latest models, and customers can now also use Anthropic models, starting in Researcher or when building agents in Microsoft Copilot Studio.
That makes “which model powers Copilot” a moving answer, while Gemini’s stays fixed to Google’s own models. Our AI benchmark coverage shows rankings shift roughly every six months, so the model badge matters less than the surface it ships inside. The large language models explainer breaks down how these underlying systems actually generate their answers.
Does Copilot use Gemini?
Copilot does not use Gemini. Copilot’s Smart mode is built on OpenAI’s GPT-5 model with real-time routing, and Microsoft has added Anthropic models as an option in Researcher and Copilot Studio. Google’s Gemini models are not part of the Copilot stack, just as OpenAI’s models do not power the Gemini app.
Gemini vs Copilot Pricing and Plans
Gemini sells direct consumer tiers while Copilot’s strongest tier is an enterprise add-on. Google offers a free Gemini tier, then Google AI Plus, Google AI Pro with the Gemini 3 Pro model and 5 TB of storage, and Google AI Ultra with up to 20x higher usage limits than Pro. Microsoft retired the standalone Copilot Pro plan in late 2025 and folded its features into Microsoft 365 Premium, while the enterprise Copilot is an add-on that requires an underlying Microsoft 365 licence.
| Plan | Provider | Typical price | What you get |
|---|---|---|---|
| Free | Gemini | $0 | Gemini 3.5 Flash, limited 3.1 Pro, Deep Research |
| Google AI Pro | Gemini | around $19.99/month | Gemini 3 Pro, 5 TB storage, agentic features |
| Google AI Ultra | Gemini | from $99.99/month | Up to 20x usage vs Pro, Deep Think, 20 TB+ |
| Copilot (free) | Microsoft | $0 | GPT-5 Smart mode on web, Windows, mobile |
| Microsoft 365 Premium | Microsoft | Consumer bundle | Former Copilot Pro features, included |
| Microsoft 365 Copilot | Microsoft | around $30/user/month | Enterprise add-on, requires M365 licence |
Source: Google AI subscriptions and Microsoft 365 Copilot plans, 2026
By the numbers: Google: the AI Pro tier bundles the Gemini 3 Pro model with 5 TB of storage and 4x higher usage limits than the free plan, while Microsoft’s enterprise Copilot is sold only as a per-seat add-on on top of an existing Microsoft 365 licence. The free tiers on both sides now ship a frontier model.
Because the strongest Copilot tier cannot be bought without a Microsoft 365 licence, the cheapest path to each assistant differs sharply. An individual can buy Gemini’s top tier outright; Copilot’s top tier sells only as a seat on Microsoft 365.
Gemini vs Copilot App Integration
Gemini’s Deep Research pulls context directly from Gmail, Drive, Docs, Slides, Sheets, PDFs and Google Chat, while Microsoft 365 Copilot is available across Word, Excel, PowerPoint, Outlook and Teams, with agentic capabilities in Word, Excel and PowerPoint now generally available. That work-surface reach helps explain Copilot’s 20 million paid Microsoft 365 seats, while Gemini’s deeper Workspace context anchors its 750 million-user app. Each assistant is deepest inside its own suite, and neither integrates natively into the other’s.
The integration depth is the practical decider for most teams. Copilot can plan, execute and refine multi-step work directly within the Office apps, and Gemini’s paid plans add expanded NotebookLM support. This is where the “better assistant” question quietly collapses into “which office suite does your organisation already run?” Readers tracking how Microsoft’s productivity base feeds Copilot adoption can see the scale in our Microsoft 365 statistics breakdown.
Can I use Gemini in Microsoft Office or Copilot in Google Workspace?
Neither assistant runs natively in the other’s suite. Copilot is built into Microsoft 365 apps such as Word, Excel and Teams, and Gemini draws context from Gmail, Drive, Docs, Slides, Sheets and Google Chat. You can use each assistant’s web app from any browser, but the deep, in-app features stay locked to their home ecosystem.
Gemini vs Copilot for Coding and Agents
Gemini 3 Pro offers advanced agentic coding capabilities across the Gemini app, CLI, and Android Studio, while GitHub brought GPT-5 to all paid GitHub Copilot plans, and Copilot Studio lets users select GPT-5 for agents that handle complex business processes. Both assistants now ship agentic and coding features, but through different doors.
The agent story splits along the same ecosystem lines as everything else. Copilot’s agentic features in Word, Excel, and PowerPoint are generally available, targeting document and spreadsheet workflows, while Gemini’s agentic coding leans toward developers in Google’s tools. For raw coding, both are frontier-class; the deciding factor is usually whether your repositories and CI already live in GitHub or your build tooling sits closer to Google.
Gemini vs Copilot User Adoption and Scale
Gemini wins on consumer scale, and Copilot wins on paid enterprise depth. The Gemini app reached 750 million monthly active users by Google’s Q4 2025 earnings call in February 2026, while Microsoft 365 Copilot reached 20 million paid enterprise seats by April 2026, with more than 60% of Fortune 500 companies running at least 10,000 seats.
The two figures are not directly comparable, and that is the point: monthly active users measure reach, paid seats measure revenue. Gemini optimises the first, Copilot the second.
Gemini vs Copilot on Capability and Reasoning
Gemini 3 ships a 1 million-token context window across its Pro, Flash, and Deep Think variants, while Copilot routes complex tasks to a deeper reasoning model and simple queries to a fast, high-throughput model. On raw capability, both sit at the frontier, and the lead changes with each release, so headline benchmark rankings shift with nearly every model update.
Context: Google: Gemini 3 was positioned for reasoning, multimodal understanding and agentic execution at its November 2025 launch, while Microsoft’s Copilot leans on OpenAI’s adaptive routing. Treat any single benchmark snapshot as a moment in time, not a permanent verdict.
Our AI benchmark coverage shows rankings shift roughly every six months, while public perception lags by over a year. Both sit close enough that integration, price, and trust decide the outcome more often than a benchmark does.
Verdict by Use Case
Google Workspace teams and Microsoft 365 enterprises pull different winners from this comparison, since both assistants reached frontier capability. The verdict turns on ecosystem fit rather than a single capability gap.
- Best for Google Workspace teams: Gemini wins, because its Deep Research and in-app features reach directly into Gmail, Docs, Drive and Chat.
- Best for Microsoft 365 enterprises: Copilot wins, because its 20 million paid seats and in-app agents sit inside the Word, Excel and Teams workflows those teams already use.
- Best for individuals on a budget: Gemini wins, because its top consumer tier can be purchased outright, while Copilot’s strongest tier requires a Microsoft 365 licence.
- Best for developers: It depends, because Gemini 3 offers agentic coding in Google’s tools while GitHub Copilot embeds GPT-5 directly in the GitHub workflow.
Which is cheaper, Gemini or Copilot?
Google’s AI Pro tier includes the Gemini 3 Pro model and 5 TB of storage, and both assistants offer a capable free tier, which makes Gemini usually cheaper for individuals. Microsoft’s enterprise Copilot also requires an underlying Microsoft 365 licence, which raises the true cost per seat for organisations that are not already on Microsoft 365. Published consumer pricing puts Google AI Pro around $19.99 a month and the enterprise Copilot add-on near $30 per user, so the cheapest capable path differs by buyer.
Can Gemini and Copilot work together?
Gemini and Copilot do not interoperate as a combined assistant. Copilot stays within Microsoft 365 and its OpenAI and Anthropic models, while Gemini stays within Gmail, Drive and Google Chat through Deep Research. They run on separate model stacks from different vendors and live inside competing productivity suites, so some organisations run both, using each inside its native suite, with no native bridge between them.
Conclusion
Gemini and Copilot reached scale through opposite strategies: Gemini’s app passed 750 million monthly active users while Copilot crossed 20 million paid seats inside Microsoft 365. For most readers, the decision is which productivity suite already anchors their day: Workspace users get more from Gemini, Microsoft 365 users get more from Copilot. As both vendors push agentic features deeper into their suites, expect the gap to keep narrowing on capability and widening on ecosystem lock-in, which makes the suite you already run the most durable deciding factor.
