Microsoft · Assistant
Microsoft Copilot
Microsoft Copilot is the AI for people who work in Microsoft 365.
Open Microsoft Copilot copilot.microsoft.com ↗
- Costs
- Free; Microsoft 365 Premium $19.99/mo
- Runs on
- –
- Best for
- Professional work
Where it shines
- Copilot sits next to the Word, Excel and Outlook files you already use.
Where it struggles
- The deeper Office features need a Microsoft 365 Premium plan.
Compare it with these apps
Assistant
Anthropic
Claude
Claude is Anthropic's app for writing and long documents, with Opus 5.5 on paid plans.
WritingLong documentsImages & screenshots
- Costs
- Free; Pro $20/mo, Max $100 or $200/mo
- Runs on
- Claude Opus 5.5 on paid plans, plus Anthropic's other Claude models
Assistant
Gemini
Gemini is the home of Gemini 4 Argon, our pick for everyday questions and work.
Everyday questionsProfessional workResearch
- Costs
- Free; AI Plus $4.99, AI Pro $19.99/mo
- Runs on
- Gemini 4 Argon, Gemini 3.8 Flash, Nano Banana 2.1
Leaderboards don’t rank apps, so Claude writes this page from its own web research. Prices and plans change often; check copilot.microsoft.com before you buy.