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Which AI should I pay for?

Tell it what you actually do. Get the best tool for each job, the one plan to pay for, and what you give up.

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Real output from a made-up example

Made by the same code as the tool

A freelance writer who already pays for ChatGPT, has $20 a month, uses AI most days, and needs research with sources:

Your stack

The best fit for each thing you do.

  1. Writing

    Perplexity Pro

    Any plan can do this. This is the one that fits the rest of your list.

  2. Research with sourcesMatters most

    Perplexity Pro

    Deep research

  3. Documents and data

    Claude Pro

    Context window up to 1M tokens, varies by model

If you only pay for one

Perplexity Pro

$17/month, billed yearly

The standard tier, for most-days use.

What you give up

  • Documents and data: not included in Perplexity Pro.

How the top 3 compare

Against what you told me. Each mark links to the vendor page it came from.

  1. Perplexity Pro

    $17/month, billed yearly, my pick

    Research with sources
    Included
    Documents and data
    Not included

  2. Grok

    Free

    Research with sources
    Included
    Documents and data
    Not included

  3. Claude Pro

    $20/month

    Research with sources
    Included
    Documents and data
    Included
  • Why not Grok? A close second, and a fair pick if its apps are already in use.
  • Why not Claude Pro? Covers documents and data better, but fits the rest of your answers less well.

No single model is best at everything. Picks come from what each plan includes, its price, how much you use AI and where you work. Prices checked 2026-10-04.

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