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
GitHub Copilot B | Runway S | Kling A | Hume AI A | |
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| Tagline | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | The pro's AI video tool. Gen-4 is the current bar. | Kuaishou's video model. The surprise standout. | Voice AI that reads + expresses emotion. |
| Category | Coding | Video | Video | Voice |
| Pricing | Free (limited) + $10/mo Pro + $19/mo Business | Free + $15-$95/mo | Credit-based, free trial | Free tier + pay-as-you-go |
| Best for | Teams with GitHub already. Devs who don't want to change IDEs. | Marketing video, pitch decks, b-roll, creative shorts. | Anyone who wants top-tier video quality for less. | Therapy apps, customer service, any voice agent where emotion matters. |
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| Kai's verdict | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier. Market leader with reason. Start here for serious video. | A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class. | A-tier in its niche. The only one that actually gets emotion right. |
| Link | Open → | Open → | Open → | Open → |