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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Sora A | Perplexity S | Devin A | Cursor S | |
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| Tagline | OpenAI's video model. Long clips, cinematic quality. | AI search done right. Cited answers, not chat theater. | Cognition Labs' autonomous coding engineer. | VS Code fork that made AI coding actually work. |
| Category | Video | Research | Agents | Coding |
| Pricing | Included with ChatGPT Plus/Pro | Free + $20/mo Pro | $500/mo | Free + $20/mo Pro + $40/mo Business |
| Best for | ChatGPT subscribers experimenting with cinematic shots. | Replacing Google for any question where you want a cited answer in seconds. | Engineering teams offloading tickets. Ops/platform work. | Developers. Non-developers who want to ship working code. |
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| Kai's verdict | A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. | S-tier for coding. If you write code of any kind, this pays back the $20 in a day. |
| Link | Open → | Open → | Open → | Open → |