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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Coding
Image
Productivity
Writing
Marketing
Devin A | Runway S | Lovable A | Cursor S | |
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| Tagline | Cognition Labs' autonomous coding engineer. | The pro's AI video tool. Gen-4 is the current bar. | Build a full app from a prompt. Stripe-ready. | VS Code fork that made AI coding actually work. |
| Category | Agents | Video | Design | Coding |
| Pricing | $500/mo | Free + $15-$95/mo | Free + $25-$100/mo | Free + $20/mo Pro + $40/mo Business |
| Best for | Engineering teams offloading tickets. Ops/platform work. | Marketing video, pitch decks, b-roll, creative shorts. | Non-devs + solopreneurs shipping MVPs. | Developers. Non-developers who want to ship working code. |
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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. Market leader with reason. Start here for serious video. | A-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs. | S-tier for coding. If you write code of any kind, this pays back the $20 in a day. |
| Link | Open → | Open → | Open → | Open → |