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AI Assistants, Compared
ChatGPT, Claude, Gemini, Copilot and Perplexity look alike from the outside. The right one depends on the software you already use and the work you do most. Start with the quick answer, then open the full review.
The quick answer
Side by side
| ChatGPT | Claude | Gemini | Copilot | Perplexity | |
|---|---|---|---|---|---|
| Best for | All-round use and integrations | Long documents and careful writing | Google Workspace teams | Microsoft 365 offices | Research with cited sources |
| Works inside | Web, desktop and mobile apps | Web, desktop and mobile apps | Google Workspace (Gmail, Docs, Sheets) | Microsoft 365 (Word, Excel, Outlook, Teams) | Web and mobile apps |
Prices and plans change often. Each review covers current plans; always confirm on the vendor’s pricing page before you buy.