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
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Cursor S | Windsurf A | Khanmigo S | Gemini A | |
|---|---|---|---|---|
| Tagline | VS Code fork that made AI coding actually work. | Codeium's agentic IDE. Cascade agent + strong free tier. | Khan Academy's AI tutor. Socratic method, built for learning. | Google's answer. Best integrated with Workspace + free for a lot. |
| Category | coding | coding | education | chat |
| Pricing | Free + $20/mo Pro + $40/mo Business | Free + $15/mo Pro | $4/mo (free for teachers) | Free + $20/mo Advanced (bundled with 2TB Drive) |
| Best for | Developers. Non-developers who want to ship working code. | Developers who want Cursor-like power for less money. | Students K-12. Parents helping with homework. Teachers prepping lessons. | Anyone already on Google, research tasks, summarizing long documents. |
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| Kai's verdict | S-tier for coding. If you write code of any kind, this pays back the $20 in a day. | A-tier. Close second to Cursor. If $5/mo matters, start here. | S-tier for kids learning. The tutoring UX is legit — not a generic chatbot dressed up. | A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google. |
| Link | Open → | Open → | Open → | Open → |