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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HeyGen S | Lovable A | GitHub Copilot B | Duolingo Max A | |
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| Tagline | AI avatar videos. Record once, speak any language. | Build a full app from a prompt. Stripe-ready. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Duolingo + AI. Explain My Answer + Roleplay features. |
| Category | Video | Design | Coding | Education |
| Pricing | Free + $24-$65/mo | Free + $25-$100/mo | Free (limited) + $10/mo Pro + $19/mo Business | $30/mo (or ~$168/yr) |
| Best for | Course creators, multilingual marketers, anyone scaling video content. | Non-devs + solopreneurs shipping MVPs. | Teams with GitHub already. Devs who don't want to change IDEs. | Language learners who've outgrown basic Duolingo. |
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| Kai's verdict | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. | A-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead. |
| Link | Open → | Open → | Open → | Open → |