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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ChatGPT Operator B | Replicate S | Duolingo Max A | Rows A | |
|---|---|---|---|---|
| Tagline | OpenAI's browser agent. Clicks and types on websites for you. | Run any open-source AI model with an API call. | Duolingo + AI. Explain My Answer + Roleplay features. | Spreadsheets with AI + live integrations baked in. |
| Category | Agents | Dev Platform | Education | Data |
| Pricing | Included with ChatGPT Pro $200/mo | Pay per second of compute | $30/mo (or ~$168/yr) | Free + $19-$89/user/mo |
| Best for | Power users willing to pay $200/mo for a browser bot. | Developers using open-source models (Flux, SDXL, Whisper, etc). | Language learners who've outgrown basic Duolingo. | Ops teams, marketers, anyone building dashboards from multiple sources. |
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| Kai's verdict | B-tier. Still early. Manus is more flexible for less money. | S-tier for open-source model APIs. The default in this space. | A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead. | A-tier. The most interesting spreadsheet in years. Great for ops dashboards. |
| Link | Open → | Open → | Open → | Open → |