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 | Fireflies A | GitHub Copilot B | Fathom S | |
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| Tagline | Duolingo + AI. Explain My Answer + Roleplay features. | Sales-focused meeting AI with CRM integration. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Meeting notes, free forever for individuals. |
| Category | Education | Meetings | Coding | Meetings |
| Pricing | $30/mo (or ~$168/yr) | Free + $10-$19/user/mo | Free (limited) + $10/mo Pro + $19/mo Business | Free for individuals + $15-$29/user/mo teams |
| Best for | Language learners who've outgrown basic Duolingo. | Sales teams, customer success, anyone running many discovery calls. | Teams with GitHub already. Devs who don't want to change IDEs. | Solo operators, freelancers, small teams on a budget. |
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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 sales teams. B-tier for solo users. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier for solo + free. The best free option, hands down. |
| Link | Open → | Open → | Open → | Open → |