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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Luma Dream Machine A | GitHub Copilot B | Khanmigo S | Perplexity S | |
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| Tagline | Smooth, cinematic motion. Image-to-video specialist. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Khan Academy's AI tutor. Socratic method, built for learning. | AI search done right. Cited answers, not chat theater. |
| Category | Video | Coding | Education | Research |
| Pricing | Free + $10-$500/mo | Free (limited) + $10/mo Pro + $19/mo Business | $4/mo (free for teachers) | Free + $20/mo Pro |
| Best for | Photographers animating stills, cinematic b-roll. | Teams with GitHub already. Devs who don't want to change IDEs. | Students K-12. Parents helping with homework. Teachers prepping lessons. | Replacing Google for any question where you want a cited answer in seconds. |
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| Kai's verdict | A-tier. Best for cinematic image-to-video. Pair with Runway for coverage. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier for kids learning. The tutoring UX is legit — not a generic chatbot dressed up. | 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 → |