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 | Cursor S | Luma Dream Machine A | NotebookLM S | |
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| Tagline | Cognition Labs' autonomous coding engineer. | VS Code fork that made AI coding actually work. | Smooth, cinematic motion. Image-to-video specialist. | Google's research notebook. Turns your docs into a podcast. |
| Category | Agents | Coding | Video | Research |
| Pricing | $500/mo | Free + $20/mo Pro + $40/mo Business | Free + $10-$500/mo | Free |
| Best for | Engineering teams offloading tickets. Ops/platform work. | Developers. Non-developers who want to ship working code. | Photographers animating stills, cinematic b-roll. | Students, researchers, anyone with a stack of PDFs or a topic to learn. |
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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 coding. If you write code of any kind, this pays back the $20 in a day. | A-tier. Best for cinematic image-to-video. Pair with Runway for coverage. | S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs. |
| Link | Open → | Open → | Open → | Open → |