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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Claude Code S | Grammarly A | Reflect A | Hex A | |
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| Tagline | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | Grammar check + tone + AI drafting, everywhere you type. | AI-powered networked notes. Roam with a brain. | Modern data notebook with Magic AI assistant. |
| Category | Coding | Writing | Productivity | Data |
| Pricing | Part of Claude Pro/Max/Team plans | Free + $12-$15/mo Premium + team plans | $10/mo | Free + $28+/user/mo |
| Best for | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Non-native English writers, business email, anyone who types a lot. | Knowledge workers + thinkers who want AI in their second brain. | Data teams at startups + enterprises. |
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| Kai's verdict | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. | A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone. | A-tier. Niche but beloved. If you've outgrown Notion, try this. | A-tier for data teams. S-tier if you already live in SQL + Python. |
| Link | Open → | Open → | Open → | Open → |