Compare AI tools
Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via
?tools=claude,chatgpt,gemini.Pick tools (4 selected)
coding
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writing
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Fathom S | Perplexity S | HeyGen S | Lex A | |
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| Tagline | Meeting notes, free forever for individuals. | AI search done right. Cited answers, not chat theater. | AI avatar videos. Record once, speak any language. | Google Docs with an AI collaborator baked in. |
| Category | meeting | research | video | writing |
| Pricing | Free for individuals + $15-$29/user/mo teams | Free + $20/mo Pro | Free + $24-$65/mo | Free + $12/mo |
| Best for | Solo operators, freelancers, small teams on a budget. | Replacing Google for any question where you want a cited answer in seconds. | Course creators, multilingual marketers, anyone scaling video content. | Essays, long-form drafts, thinking on the page. |
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| Kai's verdict | S-tier for solo + free. The best free option, hands down. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. | A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form. |
| Link | Open → | Open → | Open → | Open → |