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.Pick tools (4 selected)
coding
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productivity
writing
marketing
Runway S | GitHub Copilot B | Hume AI A | Perplexity S | |
|---|---|---|---|---|
| Tagline | The pro's AI video tool. Gen-4 is the current bar. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Voice AI that reads + expresses emotion. | AI search done right. Cited answers, not chat theater. |
| Category | video | coding | voice | research |
| Pricing | Free + $15-$95/mo | Free (limited) + $10/mo Pro + $19/mo Business | Free tier + pay-as-you-go | Free + $20/mo Pro |
| Best for | Marketing video, pitch decks, b-roll, creative shorts. | Teams with GitHub already. Devs who don't want to change IDEs. | Therapy apps, customer service, any voice agent where emotion matters. | Replacing Google for any question where you want a cited answer in seconds. |
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| Kai's verdict | S-tier. Market leader with reason. Start here for serious video. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | A-tier in its niche. The only one that actually gets emotion right. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. |
| Link | Open → | Open → | Open → | Open → |