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 (2 selected)
coding
image
productivity
writing
marketing
Runway S | Replicate S | |
|---|---|---|
| Tagline | The pro's AI video tool. Gen-4 is the current bar. | Run any open-source AI model with an API call. |
| Category | video | dev platform |
| Pricing | Free + $15-$95/mo | Pay per second of compute |
| Best for | Marketing video, pitch decks, b-roll, creative shorts. | Developers using open-source models (Flux, SDXL, Whisper, etc). |
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| Kai's verdict | S-tier. Market leader with reason. Start here for serious video. | S-tier for open-source model APIs. The default in this space. |
| Link | Open → | Open → |