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)
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productivity
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Gamma A | Perplexity S | ChatGPT Operator B | NotebookLM S | |
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| Tagline | AI slide decks that don't look AI-generated. | AI search done right. Cited answers, not chat theater. | OpenAI's browser agent. Clicks and types on websites for you. | Google's research notebook. Turns your docs into a podcast. |
| Category | productivity | research | agents | research |
| Pricing | Free + $10-$20/mo | Free + $20/mo Pro | Included with ChatGPT Pro $200/mo | Free |
| Best for | Pitch decks, proposals, internal presentations — fast. | Replacing Google for any question where you want a cited answer in seconds. | Power users willing to pay $200/mo for a browser bot. | Students, researchers, anyone with a stack of PDFs or a topic to learn. |
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| Kai's verdict | A-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | B-tier. Still early. Manus is more flexible for less money. | S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs. |
| Link | Open → | Open → | Open → | Open → |