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.
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Lex A | Hex A | ChatGPT Operator B | Fathom S | |
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| Tagline | Google Docs with an AI collaborator baked in. | Modern data notebook with Magic AI assistant. | OpenAI's browser agent. Clicks and types on websites for you. | Meeting notes, free forever for individuals. |
| Category | Writing | Data | Agents | Meetings |
| Pricing | Free + $12/mo | Free + $28+/user/mo | Included with ChatGPT Pro $200/mo | Free for individuals + $15-$29/user/mo teams |
| Best for | Essays, long-form drafts, thinking on the page. | Data teams at startups + enterprises. | Power users willing to pay $200/mo for a browser bot. | Solo operators, freelancers, small teams on a budget. |
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| Kai's verdict | A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form. | A-tier for data teams. S-tier if you already live in SQL + Python. | B-tier. Still early. Manus is more flexible for less money. | S-tier for solo + free. The best free option, hands down. |
| Link | Open → | Open → | Open → | Open → |