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)
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productivity
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Manus S | HeyGen S | Perplexity S | |
|---|---|---|---|
| Tagline | Autonomous AI agent that actually finishes tasks. | AI avatar videos. Record once, speak any language. | AI search done right. Cited answers, not chat theater. |
| Category | agents | video | research |
| Pricing | Free tier + $39-$199/mo | Free + $24-$65/mo | Free + $20/mo Pro |
| Best for | People who want to hand off tasks entirely — trip planning, research, spreadsheet building. | Course creators, multilingual marketers, anyone scaling video content. | Replacing Google for any question where you want a cited answer in seconds. |
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| Kai's verdict | S-tier in the agent category. The first one I'd give to a non-technical friend. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. | 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 → |