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)
coding
image
productivity
writing
marketing
Writesonic B | v0 S | GitHub Copilot B | Perplexity S | |
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| Tagline | SEO-first AI writer. Optimized for ranking content. | Vercel's AI-powered UI generator. Prompt to shadcn component. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | AI search done right. Cited answers, not chat theater. |
| Category | marketing | design | coding | research |
| Pricing | Free + $15-$99/mo | Free + $20/mo | Free (limited) + $10/mo Pro + $19/mo Business | Free + $20/mo Pro |
| Best for | Content marketers churning out SEO articles. | Frontend devs, PMs prototyping UIs, anyone on Next.js. | Teams with GitHub already. Devs who don't want to change IDEs. | Replacing Google for any question where you want a cited answer in seconds. |
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| Kai's verdict | B-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic. | S-tier. If you're on Vercel/shadcn, this is cheating. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | 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 → |