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
Devin A | Sora A | Perplexity S | |
|---|---|---|---|
| Tagline | Cognition Labs' autonomous coding engineer. | OpenAI's video model. Long clips, cinematic quality. | AI search done right. Cited answers, not chat theater. |
| Category | agents | video | research |
| Pricing | $500/mo | Included with ChatGPT Plus/Pro | Free + $20/mo Pro |
| Best for | Engineering teams offloading tickets. Ops/platform work. | ChatGPT subscribers experimenting with cinematic shots. | Replacing Google for any question where you want a cited answer in seconds. |
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| Kai's verdict | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. | 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. |
| Link | Open → | Open → | Open → |