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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Claude Code S | Replicate S | Grammarly A | Perplexity S | |
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| Tagline | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | Run any open-source AI model with an API call. | Grammar check + tone + AI drafting, everywhere you type. | AI search done right. Cited answers, not chat theater. |
| Category | coding | dev platform | writing | research |
| Pricing | Part of Claude Pro/Max/Team plans | Pay per second of compute | Free + $12-$15/mo Premium + team plans | Free + $20/mo Pro |
| Best for | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Developers using open-source models (Flux, SDXL, Whisper, etc). | Non-native English writers, business email, anyone who types a lot. | Replacing Google for any question where you want a cited answer in seconds. |
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| Kai's verdict | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. | S-tier for open-source model APIs. The default in this space. | A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone. | 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 → |