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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Runway S | Claude Agent SDK S | |
|---|---|---|
| Tagline | The pro's AI video tool. Gen-4 is the current bar. | Anthropic's SDK for building your own agents on Claude. |
| Category | Video | Agents |
| Pricing | Free + $15-$95/mo | API usage + SDK is free |
| Best for | Marketing video, pitch decks, b-roll, creative shorts. | Developers building custom agents for their own company/product. |
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| Kai's verdict | S-tier. Market leader with reason. Start here for serious video. | S-tier for builders. The right primitives. What Kai is built on under the hood. |
| Link | Open → | Open → |