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 | Perplexity S | Kling A | Runway S | |
|---|---|---|---|---|
| Tagline | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | AI search done right. Cited answers, not chat theater. | Kuaishou's video model. The surprise standout. | The pro's AI video tool. Gen-4 is the current bar. |
| Category | Coding | Research | Video | Video |
| Pricing | Part of Claude Pro/Max/Team plans | Free + $20/mo Pro | Credit-based, free trial | Free + $15-$95/mo |
| Best for | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Replacing Google for any question where you want a cited answer in seconds. | Anyone who wants top-tier video quality for less. | Marketing video, pitch decks, b-roll, creative shorts. |
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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 search. I use it before Google now. If you're still Googling everything, try this for a week. | A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class. | S-tier. Market leader with reason. Start here for serious video. |
| Link | Open → | Open → | Open → | Open → |