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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Coding
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Productivity
Writing
Marketing
Replicate S | Otter.ai B | HeyGen S | Lex A | |
|---|---|---|---|---|
| Tagline | Run any open-source AI model with an API call. | Meeting transcription veteran. Cross-platform, team-friendly. | AI avatar videos. Record once, speak any language. | Google Docs with an AI collaborator baked in. |
| Category | Dev Platform | Meetings | Video | Writing |
| Pricing | Pay per second of compute | Free + $17-$30/user/mo | Free + $24-$65/mo | Free + $12/mo |
| Best for | Developers using open-source models (Flux, SDXL, Whisper, etc). | Teams on Windows/PC. Anyone needing cross-platform coverage. | Course creators, multilingual marketers, anyone scaling video content. | Essays, long-form drafts, thinking on the page. |
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| Kai's verdict | S-tier for open-source model APIs. The default in this space. | B-tier. Granola is better UX but Otter works everywhere. Pick based on your platform. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. | A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form. |
| Link | Open → | Open → | Open → | Open → |