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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Stripe Link A | Ideogram S | Perplexity S | HeyGen S | |
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| Tagline | A digital wallet that lets AI agents spend on your behalf — without ever seeing your actual card number. | The one that actually gets text in images right. | AI search done right. Cited answers, not chat theater. | AI avatar videos. Record once, speak any language. |
| Category | Agents | Image | Research | Video |
| Pricing | Free for consumers; standard Stripe per-transaction fees for merchants | Free + $8/mo + $20/mo + $60/mo | Free + $20/mo Pro | Free + $24-$65/mo |
| Best for | Anyone running autonomous AI agents (shopping bots, booking assistants, personal AI) who wants delegated payment capability without handing over raw card data. | Anything with text — posters, ads, album covers, slide decks. | Replacing Google for any question where you want a cited answer in seconds. | Course creators, multilingual marketers, anyone scaling video content. |
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| Kai's verdict | Stripe Link is the most credible first move toward a real agentic payment layer — the one-time-use card model is genuinely clever, and the existing merchant network gives it a head start no startup wallet can match. But the 'approve every transaction' UX will get old fast, and the hard part (autonomous spending with guardrails) is still on the roadmap. (Verdict pending Phi's full review.) | S-tier for text-in-image. Use this for posters, Midjourney for art. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. |
| Link | Open → | Open → | Open → | Open → |