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
Flux (Black Forest Labs) A | Lovable A | NotebookLM S | Ideogram S | |
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| Tagline | Open weights + strong photorealism. The open-source answer. | Build a full app from a prompt. Stripe-ready. | Google's research notebook. Turns your docs into a podcast. | The one that actually gets text in images right. |
| Category | Image | Design | Research | Image |
| Pricing | API + open weights (Schnell is Apache 2.0) | Free + $25-$100/mo | Free | Free + $8/mo + $20/mo + $60/mo |
| Best for | Developers + power users who want control and privacy. | Non-devs + solopreneurs shipping MVPs. | Students, researchers, anyone with a stack of PDFs or a topic to learn. | Anything with text — posters, ads, album covers, slide decks. |
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| Kai's verdict | A-tier. S-tier if you self-host. The reason open-source image gen matters. | A-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs. | S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs. | S-tier for text-in-image. Use this for posters, Midjourney for art. |
| Link | Open → | Open → | Open → | Open → |