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
Image
Productivity
Writing
Marketing
Runway S | Replit Agent A | |
|---|---|---|
| Tagline | The pro's AI video tool. Gen-4 is the current bar. | Replit's AI that builds + deploys full apps on their platform. |
| Category | Video | Coding |
| Pricing | Free + $15-$95/mo | $10-$25/mo Core/Teams |
| Best for | Marketing video, pitch decks, b-roll, creative shorts. | Teachers, students, prototypers, hackathon builders. |
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| Kai's verdict | S-tier. Market leader with reason. Start here for serious video. | A-tier. Best for teaching a kid to code in 2026. |
| Link | Open → | Open → |