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
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Productivity
Writing
Marketing
Hex A | OpenRouter S | Devin A | |
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| Tagline | Modern data notebook with Magic AI assistant. | One API, every model. Pay-as-you-go, no subscriptions. | Cognition Labs' autonomous coding engineer. |
| Category | Data | Dev Platform | Agents |
| Pricing | Free + $28+/user/mo | Pay per token — model-dependent | $500/mo |
| Best for | Data teams at startups + enterprises. | Developers experimenting across models. Apps that want fallback logic. | Engineering teams offloading tickets. Ops/platform work. |
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| Kai's verdict | A-tier for data teams. S-tier if you already live in SQL + Python. | S-tier for model-shopping. I use this for every prototype before committing. | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. |
| Link | Open → | Open → | Open → |