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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Gemini A | Aider A | Hex A | |
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| Tagline | Google's answer. Best integrated with Workspace + free for a lot. | Terminal-based AI pair programmer. Git-aware, model-flexible. | Modern data notebook with Magic AI assistant. |
| Category | Chatbots | Coding | Data |
| Pricing | Free + $20/mo Advanced (bundled with 2TB Drive) | Free (open source) + whatever API you use | Free + $28+/user/mo |
| Best for | Anyone already on Google, research tasks, summarizing long documents. | Developers who want open-source tooling with full control. | Data teams at startups + enterprises. |
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| Kai's verdict | A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google. | A-tier. The right answer if you want open-source + terminal-native + model-agnostic. | A-tier for data teams. S-tier if you already live in SQL + Python. |
| Link | Open → | Open → | Open → |