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
Cursor S | Sora A | Writesonic B | HeyGen S | |
|---|---|---|---|---|
| Tagline | VS Code fork that made AI coding actually work. | OpenAI's video model. Long clips, cinematic quality. | SEO-first AI writer. Optimized for ranking content. | AI avatar videos. Record once, speak any language. |
| Category | Coding | Video | Marketing | Video |
| Pricing | Free + $20/mo Pro + $40/mo Business | Included with ChatGPT Plus/Pro | Free + $15-$99/mo | Free + $24-$65/mo |
| Best for | Developers. Non-developers who want to ship working code. | ChatGPT subscribers experimenting with cinematic shots. | Content marketers churning out SEO articles. | Course creators, multilingual marketers, anyone scaling video content. |
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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. | A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros. | B-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. |
| Link | Open → | Open → | Open → | Open → |