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)
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GitHub Copilot B | Elicit S | Grok A | Perplexity S | |
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| Tagline | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | AI research assistant for academic literature. | xAI's chatbot. Real-time X/Twitter data + fewer refusals. | AI search done right. Cited answers, not chat theater. |
| Category | coding | research | chat | research |
| Pricing | Free (limited) + $10/mo Pro + $19/mo Business | Free + $12-$42/mo | Free + $30/mo SuperGrok + included with X Premium | Free + $20/mo Pro |
| Best for | Teams with GitHub already. Devs who don't want to change IDEs. | Grad students, researchers, anyone doing literature reviews. | Breaking news, live event tracking, users already on X. | Replacing Google for any question where you want a cited answer in seconds. |
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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 for academic research. Nothing else comes close for systematic reviews. | 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. |
| Link | Open → | Open → | Open → | Open → |