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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Coding
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Productivity
Writing
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Devin A | Replicate S | Rows A | Genspark A | |
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| Tagline | Cognition Labs' autonomous coding engineer. | Run any open-source AI model with an API call. | Spreadsheets with AI + live integrations baked in. | AI agent for deep search. Generates Sparkpages — full mini-reports. |
| Category | Agents | Dev Platform | Data | Research |
| Pricing | $500/mo | Pay per second of compute | Free + $19-$89/user/mo | Free + $25/mo Plus |
| Best for | Engineering teams offloading tickets. Ops/platform work. | Developers using open-source models (Flux, SDXL, Whisper, etc). | Ops teams, marketers, anyone building dashboards from multiple sources. | Travel planning, shopping comparisons, deep research where you want an artifact back. |
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| Kai's verdict | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. | S-tier for open-source model APIs. The default in this space. | A-tier. The most interesting spreadsheet in years. Great for ops dashboards. | A-tier. Bet on this one — the Sparkpage format is genuinely new. |
| Link | Open → | Open → | Open → | Open → |