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 | Aider A | Bolt.new (StackBlitz) A | Perplexity S | |
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| Tagline | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | Terminal-based AI pair programmer. Git-aware, model-flexible. | Prompt to deployed full-stack app in the browser. | AI search done right. Cited answers, not chat theater. |
| Category | Coding | Coding | Coding | Research |
| Pricing | Part of Claude Pro/Max/Team plans | Free (open source) + whatever API you use | Free + $20-$200/mo | Free + $20/mo Pro |
| Best for | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Developers who want open-source tooling with full control. | PMs, founders, non-devs shipping MVPs. | 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. | A-tier. The right answer if you want open-source + terminal-native + model-agnostic. | A-tier. Best for fast prototypes. Competitive with Lovable — try both. | 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 → |