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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Perplexity S | Ask YouTube A | HeyGen S | |
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| Tagline | AI search done right. Cited answers, not chat theater. | YouTube's Gemini-powered conversational search lets you ask natural language questions and get answers drawn from videos, Shorts, and the web — without ever leaving the platform. | AI avatar videos. Record once, speak any language. |
| Category | Research | Research | Video |
| Pricing | Free + $20/mo Pro | Included with YouTube Premium ($13.99/mo); expanding to some free users | Free + $24-$65/mo |
| Best for | Replacing Google for any question where you want a cited answer in seconds. | YouTube heavy users who want to discover content through conversation rather than keyword guessing, especially for learning, research, or planning-style queries. | Course creators, multilingual marketers, anyone scaling video content. |
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| Kai's verdict | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | A genuinely interesting evolution of video search that could make YouTube feel more like a knowledge engine, but it's still early-stage, US-locked, and paywalled behind Premium — watch this space rather than rerouting your workflow around it yet. (Verdict pending Phi's full review.) | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. |
| Link | Open → | Open → | Open → |