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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Cartesia S | Recraft S | GitHub Copilot B | HeyGen S | |
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| Tagline | Ultra-low-latency voice. Built for realtime agents. | Vector + raster AI for designers. Actually controls the output. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | AI avatar videos. Record once, speak any language. |
| Category | Voice | Image | Coding | Video |
| Pricing | Free tier + usage-based API | Free + $12-$48/mo | Free (limited) + $10/mo Pro + $19/mo Business | Free + $24-$65/mo |
| Best for | Developers building voice agents, phone bots, interactive apps. | Designers, brand teams, anyone needing vector output or tight style control. | Teams with GitHub already. Devs who don't want to change IDEs. | Course creators, multilingual marketers, anyone scaling video content. |
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| Kai's verdict | S-tier for realtime. If latency matters more than voice catalog, start here. | S-tier for designers. The only one that takes vectors seriously. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. |
| Link | Open → | Open → | Open → | Open → |