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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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Skye A | Gamma A | NotebookLM S | Hugging Face S | |
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| Tagline | An agentic iPhone home screen that replaces your static icon grid with AI widgets that proactively surface health, calendar, finance, and local context — without you having to open a single app. | AI slide decks that don't look AI-generated. | Google's research notebook. Turns your docs into a podcast. | The GitHub of AI. Models, datasets, spaces — all in one. |
| Category | Agents | Productivity | Research | Dev Platform |
| Pricing | Waitlist / Beta (pricing not yet disclosed) | Free + $10-$20/mo | Free | Free + $9-$20/mo + enterprise |
| Best for | iPhone power users who are frustrated that Siri is still reactive and want their home screen to actually anticipate their day. | Pitch decks, proposals, internal presentations — fast. | Students, researchers, anyone with a stack of PDFs or a topic to learn. | Any ML/AI developer. Hobbyists exploring open models. |
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| Kai's verdict | The concept is genuinely compelling — turning the home screen into a living AI layer is a smarter bet than yet another chat interface — but this is vaporware until it ships publicly and we see whether Apple's sandbox lets it breathe. (Verdict pending Phi's full review.) | A-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes. | S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs. | S-tier infrastructure. The one platform every AI dev eventually uses. |
| Link | Open → | Open → | Open → | Open → |