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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Duolingo Max A | Stable Audio A | |
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| Tagline | Duolingo + AI. Explain My Answer + Roleplay features. | Stability AI's open audio model. Loops + SFX + background. |
| Category | Education | Audio |
| Pricing | $30/mo (or ~$168/yr) | Free + $12/mo Pro + enterprise |
| Best for | Language learners who've outgrown basic Duolingo. | Game developers, podcasters needing SFX, video creators needing background music. |
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| Kai's verdict | A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead. | A-tier for its niche. Different use case than Suno — SFX and loops, not songs. |
| Link | Open → | Open → |