| Category | Chat & assistants · Chatbots & LLMs | Chat & assistants · Chatbots & LLMs |
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| In one sentence | The search engine that answers with sources: ask as you would a person and check every fact in one click. | The AI that already comes with your Windows, Edge and Word: free for the basics and powerful if you already pay for Microsoft 365. |
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| Free plan | ✓ Yes | ✓ Yes |
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| Price | Free / Pro $20/mo / Max $200/mo | Free / Microsoft 365 Personal €10/mo |
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| Plans and pricing | - Free €0
- Pro $20/month or $200/year (≈$16.67/month)
- Max $200/month or $2,000/year
- Education Pro $10/month
- Enterprise Pro / Max $40 / $325 per user per month
| - Copilot (free) €0
- Microsoft 365 Personal €10/month or €99/year
- Microsoft 365 Family €13/month or €129/year
- Microsoft 365 Premium €22/month or €219/year
- Microsoft 365 Copilot (business) ≈ $30/user/month
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| AIAO score | 97/100 best | 86/100 |
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| Languages | No verified data | No verified data |
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| Where to use it | Web, iOS, Android, Windows and macOS; Comet browser; Sonar API. | Web, Windows app and Copilot key, Edge, Bing, iOS, Android, Word, Excel, PowerPoint and Outlook. |
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| Pros | - Every answer links its sources so you can check them instantly.
- Up-to-date, real-time information.
- One subscription to choose between OpenAI, Anthropic and Google models.
- Comet, a free Chromium-based browser with an assistant that acts for you.
| - It is where you already work: Windows, Edge and Office, even with a Copilot key.
- In Word, Excel, PowerPoint and Outlook it genuinely saves time.
- Generous free version: chat, sourced web search, voice and images.
- Included in Microsoft 365 Personal and Family (60 AI credits a month).
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| Cons | - Clashes with publishers (lawsuits from Dow Jones, The New York Times, Britannica, Reddit…).
- Limited free plan: about 3 Pro searches a day and 1 research report a month.
- Agentic-browser risks (prompt injection) and training on by default.
| - Confusing plans and branding.
- In raw answer quality it usually trails ChatGPT, Gemini or Claude.
- Windows and Edge integration many find intrusive.
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| Use cases | - Students, journalists and researchers who need sourced answers; professionals who want several frontier AIs with one subscription; anyone looking for a Google alternative for complex searches.
- Narrow the sources in the question itself (e.g. “only .gob.es sites and Spanish press from 2026”) and always open two or three citations before trusting a fact. If you use it for work, turn off “AI data retention” first.
| - People who already use Word, Excel and Outlook; companies in the Microsoft ecosystem; free, occasional use from Windows.
- In Word, ask for a draft based on a specific file (you can reference it with /): it will start from your own data instead of making things up and you only need to polish it.
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| Privacy and data | On Free, Pro and Max, “AI data retention” is on, so your queries may be used for training; turn it off in Settings > Preferences (only affects future data). On Enterprise, data is never used for training and files are deleted after 7 days. | When signed in you can stop your conversations being used for training under Privacy > “Model training”. What you do with Copilot inside Word, Excel or PowerPoint on home plans is not used to train the base models, according to Microsoft. |
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| Profile | View details → | View details → |
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