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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Skye A | Claude Code S | NeuralSet A | ChatGPT 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. | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | Meta FAIR's open-source Python library that finally bridges the gap between neuroimaging data (fMRI, EEG, spikes) and modern deep learning pipelines. | The default. Strongest ecosystem + best multimodal breadth. |
| Category | Agents | Coding | Research | Chatbots |
| Pricing | Waitlist / Beta (pricing not yet disclosed) | Part of Claude Pro/Max/Team plans | Free (MIT open source) | Free + $20/mo Plus + $200/mo Pro |
| Best for | iPhone power users who are frustrated that Siri is still reactive and want their home screen to actually anticipate their day. | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Computational neuroscience researchers who want to train deep learning models on brain recordings without building custom data pipelines from scratch. | General use, voice chat, image generation, first-time AI users. |
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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 if you live in the terminal. Different shape than Cursor — complementary, not replacement. | If you're doing neuro-AI research, this is the plumbing you've been manually building for years — finally done right by the team that actually runs these experiments at scale. Extremely narrow use case, but within that lane it looks genuinely best-in-class. (Verdict pending Phi's full review.) | S-tier all-rounder. If you want one tool that does everything okay-to-great, this is it. |
| Link | Open → | Open → | Open → | Open → |