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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 | Replicate S | Claude Agent SDK 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. | Run any open-source AI model with an API call. | Anthropic's SDK for building your own agents on Claude. |
| Category | Agents | Dev Platform | Agents |
| Pricing | Waitlist / Beta (pricing not yet disclosed) | Pay per second of compute | API usage + SDK is free |
| Best for | iPhone power users who are frustrated that Siri is still reactive and want their home screen to actually anticipate their day. | Developers using open-source models (Flux, SDXL, Whisper, etc). | Developers building custom agents for their own company/product. |
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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.) | S-tier for open-source model APIs. The default in this space. | S-tier for builders. The right primitives. What Kai is built on under the hood. |
| Link | Open → | Open → | Open → |