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
Devin A | HeyGen S | Hex A | Replicate S | |
|---|---|---|---|---|
| Tagline | Cognition Labs' autonomous coding engineer. | AI avatar videos. Record once, speak any language. | Modern data notebook with Magic AI assistant. | Run any open-source AI model with an API call. |
| Category | agents | video | data | dev platform |
| Pricing | $500/mo | Free + $24-$65/mo | Free + $28+/user/mo | Pay per second of compute |
| Best for | Engineering teams offloading tickets. Ops/platform work. | Course creators, multilingual marketers, anyone scaling video content. | Data teams at startups + enterprises. | Developers using open-source models (Flux, SDXL, Whisper, etc). |
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| Kai's verdict | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. | A-tier for data teams. S-tier if you already live in SQL + Python. | S-tier for open-source model APIs. The default in this space. |
| Link | Open → | Open → | Open → | Open → |