Best for: Write
ChatGPT
The best-known AI chat assistant: ask anything, get a written answer.
Best for: Emails, essays, captions and cleaner writing.
Microsoft's free AI assistant for chat, images and voice.
Copilot is Microsoft's AI assistant. Chat with it on the web, in Windows or on your phone to draft text, answer questions and create images. Paid Microsoft 365 plans add Copilot inside Word, Excel and Outlook.
Free chat is enough; pay only if you want it inside Word/Excel.
Microsoft says Copilot is free with a signed-in Microsoft account. Paid plans offer higher usage and Copilot in Office apps (free one-month trial offered).
Source: Microsoft Copilot's own pricing page, checked Nov 2026. Plans change; confirm before you pay.
Best for: Write
The best-known AI chat assistant: ask anything, get a written answer.
Best for: Write
A careful, clear AI writing and thinking partner from Anthropic.
Best for: Write
Google's AI assistant, free with any Google account.