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Which AI should I use?
Answer five quick questions and get one AI tool to start with, a runner-up, and the Iro lessons that teach you to use it well. It covers the five assistants most people choose between: ChatGPT, Claude, Gemini, Perplexity and Microsoft Copilot.
The quick rules the picker uses
If you'd rather read than click, this is the same logic in one table.
| If this is true for you… | Start with | Why |
|---|---|---|
| You need answers with sources you can check | Perplexity | It searches the live web and shows citations with every answer |
| You mostly write or edit long documents | Claude | Natural prose and careful handling of long inputs |
| You write or review code | Claude, or Copilot in your editor | Claude for reasoning over code; Copilot where you already type it |
| Your work lives in Gmail, Docs and Sheets | Gemini | It is built into Google's apps |
| Your work lives in Word, Excel, Outlook and Teams | Copilot | It is built into Microsoft 365 |
| You make images | ChatGPT or Gemini | Both create images from a prompt |
| None of the above, or a bit of everything | ChatGPT | The most versatile all-rounder with a generous free tier |
Features and plans change often, so check each tool's own site for current details. For the full side-by-side, see AI tools compared and ChatGPT vs Claude vs Gemini.
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Choosing an AI tool: common questions
Which AI should I use?
It depends on the job you do most. ChatGPT is the safest all-rounder, Claude is strongest for writing and code, Perplexity is best when you need sources you can check, Gemini fits best if your work lives in Google, and Copilot fits best if it lives in Microsoft 365. The picker above weighs your answers and names one tool plus a runner-up.
Is this picker free, and do I need to sign up?
It's free and there is no sign-up. Your answers stay in your browser; nothing you pick is sent to us.
Should I pay for an AI tool?
Usually not to start. ChatGPT, Claude, Gemini and Perplexity all have free tiers that cover most people's first few months. Pay only when you keep hitting a limit on the one you use most.
Is it safe to put work documents into an AI tool?
Check your employer's policy first. If your company provides an approved AI tool, use that one for work data. Don't paste confidential or personal data into a personal account on any of these tools.
Why does using the tool well matter more than which tool I pick?
The leading assistants are close enough that how you prompt, check and iterate changes your results more than switching tools does. That skill is AI fluency, and it carries over to whichever tool you choose.