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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Gemini A | Claude Code S | Sudowrite S | Perplexity S | |
|---|---|---|---|---|
| Tagline | Google's answer. Best integrated with Workspace + free for a lot. | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | AI writing tool built specifically for fiction writers. | AI search done right. Cited answers, not chat theater. |
| Category | chat | coding | writing | research |
| Pricing | Free + $20/mo Advanced (bundled with 2TB Drive) | Part of Claude Pro/Max/Team plans | $19-$59/mo | Free + $20/mo Pro |
| Best for | Anyone already on Google, research tasks, summarizing long documents. | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Novelists, screenwriters, fiction short-form writers. | Replacing Google for any question where you want a cited answer in seconds. |
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| Kai's verdict | A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google. | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. | S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time. | 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 → |