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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Grok A | Perplexity S | GitHub Copilot B | MagicSchool S | |
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| Tagline | xAI's chatbot. Real-time X/Twitter data + fewer refusals. | AI search done right. Cited answers, not chat theater. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | AI platform built for teachers. Lesson plans + IEPs + admin. |
| Category | Chatbots | Research | Coding | Education |
| Pricing | Free + $30/mo SuperGrok + included with X Premium | Free + $20/mo Pro | Free (limited) + $10/mo Pro + $19/mo Business | Free + $100/yr Plus + school plans |
| Best for | Breaking news, live event tracking, users already on X. | Replacing Google for any question where you want a cited answer in seconds. | Teams with GitHub already. Devs who don't want to change IDEs. | Teachers prepping materials. School districts. |
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| Kai's verdict | A-tier for real-time. B-tier for everything else. Worth checking when news breaks. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier for teachers. If you teach K-12, start here this week. |
| Link | Open → | Open → | Open → | Open → |