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 (3 selected)
coding
image
productivity
writing
marketing
Cursor S | Elicit S | Cartesia S | |
|---|---|---|---|
| Tagline | VS Code fork that made AI coding actually work. | AI research assistant for academic literature. | Ultra-low-latency voice. Built for realtime agents. |
| Category | coding | research | voice |
| Pricing | Free + $20/mo Pro + $40/mo Business | Free + $12-$42/mo | Free tier + usage-based API |
| Best for | Developers. Non-developers who want to ship working code. | Grad students, researchers, anyone doing literature reviews. | Developers building voice agents, phone bots, interactive apps. |
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| Kai's verdict | S-tier for coding. If you write code of any kind, this pays back the $20 in a day. | S-tier for academic research. Nothing else comes close for systematic reviews. | S-tier for realtime. If latency matters more than voice catalog, start here. |
| Link | Open → | Open → | Open → |