Compare AI tools

	Perplexity S	Replicate S	Skye A	Reflect A
Tagline	AI search done right. Cited answers, not chat theater.	Run any open-source AI model with an API call.	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-powered networked notes. Roam with a brain.
Category	Research	Dev Platform	Agents	Productivity
Pricing	Free + $20/mo Pro	Pay per second of compute	Waitlist / Beta (pricing not yet disclosed)	$10/mo
Best for	Replacing Google for any question where you want a cited answer in seconds.	Developers using open-source models (Flux, SDXL, Whisper, etc).	iPhone power users who are frustrated that Siri is still reactive and want their home screen to actually anticipate their day.	Knowledge workers + thinkers who want AI in their second brain.
Strengths	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Tens of thousands of models (image, video, audio, LLMs) One-line API for any model Cog framework for custom model deploy	Ambient, proactive intelligence delivered via native iOS widgets — no app-switching required Cross-domain context: health, calendar, email, finances, and local recommendations in one layer Works within iOS permission model (no jailbreak or sideloading), making App Store approval plausible Strong pre-launch signal: 25k+ waitlist and backing from a16z, True Ventures, and SV Angel	AI auto-links related notes Generates backlinks + summaries Clean, minimal UX
Weaknesses	Not a general chatbot Answers can be shallow on complex topics	Cold starts on less-popular models Pricing gets real at scale	Still pre-launch / beta — zero proven track record and no public pricing yet iPhone-only by design, which immediately locks out half the smartphone market Battery drain and privacy concerns from constant ambient context scanning are real and unresolved	Expensive for just notes Smaller community than Obsidian
Kai's verdict	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.	S-tier for open-source model APIs. The default in this space.	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. Niche but beloved. If you've outgrown Notion, try this.
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