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)
coding
image
productivity
writing
marketing
Replit Agent A | Perplexity S | HeyGen S | Replicate S | |
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| Tagline | Replit's AI that builds + deploys full apps on their platform. | AI search done right. Cited answers, not chat theater. | AI avatar videos. Record once, speak any language. | Run any open-source AI model with an API call. |
| Category | coding | research | video | dev platform |
| Pricing | $10-$25/mo Core/Teams | Free + $20/mo Pro | Free + $24-$65/mo | Pay per second of compute |
| Best for | Teachers, students, prototypers, hackathon builders. | Replacing Google for any question where you want a cited answer in seconds. | Course creators, multilingual marketers, anyone scaling video content. | Developers using open-source models (Flux, SDXL, Whisper, etc). |
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| Kai's verdict | A-tier. Best for teaching a kid to code in 2026. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. | S-tier for open-source model APIs. The default in this space. |
| Link | Open → | Open → | Open → | Open → |