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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Hex A | Hume AI A | Claude Code S | Elicit S | |
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| Tagline | Modern data notebook with Magic AI assistant. | Voice AI that reads + expresses emotion. | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | AI research assistant for academic literature. |
| Category | Data | Voice | Coding | Research |
| Pricing | Free + $28+/user/mo | Free tier + pay-as-you-go | Part of Claude Pro/Max/Team plans | Free + $12-$42/mo |
| Best for | Data teams at startups + enterprises. | Therapy apps, customer service, any voice agent where emotion matters. | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Grad students, researchers, anyone doing literature reviews. |
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| Kai's verdict | A-tier for data teams. S-tier if you already live in SQL + Python. | A-tier in its niche. The only one that actually gets emotion right. | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. | S-tier for academic research. Nothing else comes close for systematic reviews. |
| Link | Open → | Open → | Open → | Open → |