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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DeepSeek S | Perplexity S | Fathom S | HeyGen S | |
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| Tagline | Chinese open-weight powerhouse. Crazy cheap, genuinely smart. | AI search done right. Cited answers, not chat theater. | Meeting notes, free forever for individuals. | AI avatar videos. Record once, speak any language. |
| Category | chat | research | meeting | video |
| Pricing | Free web + ultra-cheap API (~$0.14/M input tokens) | Free + $20/mo Pro | Free for individuals + $15-$29/user/mo teams | Free + $24-$65/mo |
| Best for | Developers + cost-conscious builders. Anyone fine with self-hosting. | Replacing Google for any question where you want a cited answer in seconds. | Solo operators, freelancers, small teams on a budget. | Course creators, multilingual marketers, anyone scaling video content. |
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| Kai's verdict | S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | S-tier for solo + free. The best free option, hands down. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. |
| Link | Open → | Open → | Open → | Open → |