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 (3 selected)
Coding
Image
Productivity
Writing
Marketing
Lex A | Hex A | Reflect A | |
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| Tagline | Google Docs with an AI collaborator baked in. | Modern data notebook with Magic AI assistant. | AI-powered networked notes. Roam with a brain. |
| Category | Writing | Data | Productivity |
| Pricing | Free + $12/mo | Free + $28+/user/mo | $10/mo |
| Best for | Essays, long-form drafts, thinking on the page. | Data teams at startups + enterprises. | Knowledge workers + thinkers who want AI in their second brain. |
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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. | A-tier. Niche but beloved. If you've outgrown Notion, try this. |
| Link | Open → | Open → | Open → |