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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Windsurf A | Perplexity S | Gemini A | GitHub Copilot B | |
|---|---|---|---|---|
| Tagline | Codeium's agentic IDE. Cascade agent + strong free tier. | AI search done right. Cited answers, not chat theater. | Google's answer. Best integrated with Workspace + free for a lot. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. |
| Category | coding | research | chat | coding |
| Pricing | Free + $15/mo Pro | Free + $20/mo Pro | Free + $20/mo Advanced (bundled with 2TB Drive) | Free (limited) + $10/mo Pro + $19/mo Business |
| Best for | Developers who want Cursor-like power for less money. | Replacing Google for any question where you want a cited answer in seconds. | Anyone already on Google, research tasks, summarizing long documents. | Teams with GitHub already. Devs who don't want to change IDEs. |
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| Kai's verdict | A-tier. Close second to Cursor. If $5/mo matters, start here. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. |
| Link | Open → | Open → | Open → | Open → |