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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writing
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Claude Code S | Windsurf A | Lex A | Grammarly A | |
|---|---|---|---|---|
| Tagline | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | Codeium's agentic IDE. Cascade agent + strong free tier. | Google Docs with an AI collaborator baked in. | Grammar check + tone + AI drafting, everywhere you type. |
| Category | coding | coding | writing | writing |
| Pricing | Part of Claude Pro/Max/Team plans | Free + $15/mo Pro | Free + $12/mo | Free + $12-$15/mo Premium + team plans |
| Best for | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Developers who want Cursor-like power for less money. | Essays, long-form drafts, thinking on the page. | Non-native English writers, business email, anyone who types a lot. |
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| Kai's verdict | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. | A-tier. Close second to Cursor. If $5/mo matters, start here. | A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form. | A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone. |
| Link | Open → | Open → | Open → | Open → |