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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Productivity
Writing
Marketing
Aider A | Fathom S | Hex A | Rows A | |
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| Tagline | Terminal-based AI pair programmer. Git-aware, model-flexible. | Meeting notes, free forever for individuals. | Modern data notebook with Magic AI assistant. | Spreadsheets with AI + live integrations baked in. |
| Category | Coding | Meetings | Data | Data |
| Pricing | Free (open source) + whatever API you use | Free for individuals + $15-$29/user/mo teams | Free + $28+/user/mo | Free + $19-$89/user/mo |
| Best for | Developers who want open-source tooling with full control. | Solo operators, freelancers, small teams on a budget. | Data teams at startups + enterprises. | Ops teams, marketers, anyone building dashboards from multiple sources. |
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| Kai's verdict | A-tier. The right answer if you want open-source + terminal-native + model-agnostic. | S-tier for solo + free. The best free option, hands down. | A-tier for data teams. S-tier if you already live in SQL + Python. | A-tier. The most interesting spreadsheet in years. Great for ops dashboards. |
| Link | Open → | Open → | Open → | Open → |