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 | GitHub Copilot B | Bolt.new (StackBlitz) A | Duolingo Max A | |
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| Tagline | OpenAI's browser agent. Clicks and types on websites for you. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Prompt to deployed full-stack app in the browser. | Duolingo + AI. Explain My Answer + Roleplay features. |
| Category | Agents | Coding | Coding | Education |
| Pricing | Included with ChatGPT Pro $200/mo | Free (limited) + $10/mo Pro + $19/mo Business | Free + $20-$200/mo | $30/mo (or ~$168/yr) |
| Best for | Power users willing to pay $200/mo for a browser bot. | Teams with GitHub already. Devs who don't want to change IDEs. | PMs, founders, non-devs shipping MVPs. | Language learners who've outgrown basic Duolingo. |
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| Kai's verdict | B-tier. Still early. Manus is more flexible for less money. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | A-tier. Best for fast prototypes. Competitive with Lovable — try both. | A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead. |
| Link | Open → | Open → | Open → | Open → |