Perplexity AI is AI search engine and Google Gemini is generative AI assistant. We compared both — and added Lucy OS1 to the mix so you can see the full picture.
TLDR:Perplexity AI and Google Gemini are both capable tools in their respective categories. Neither offers persistent cross-session memory, automatic calendar and email awareness, or the always-on working presence that modern knowledge workers need. Lucy OS1 was built specifically for this gap — it remembers your context across every session, reads your live calendar and inbox, and stays present alongside your work. Both Perplexity AI and Google Gemini are solid for their core use cases; Lucy OS1 is the alternative if you want an AI that genuinely knows you.
PERPLEXITY AI · PERPLEXITY AI
AI search engine — "Ask anything."
Pricing: Free; Pro $20/month
GOOGLE GEMINI · GOOGLE
Generative AI assistant — "Your AI assistant — from Google."
Pricing: Free; Gemini Advanced $19.99/month (Google One AI Premium)
| Feature | Perplexity AI | Google Gemini |
|---|---|---|
| Voice conversation |
Limited
Perplexity has voice input on mobile but is primarily text-first
|
Gemini Live
Gemini Live provides real-time voice conversation; available on mobile and desktop
|
| Cross-session memory |
No
Each Perplexity search starts fresh with no prior context
|
No
Gemini does not retain memory between conversations
|
THERE IS A THIRD OPTION
While both Perplexity AI and Google Gemini are strong in their domains, neither has the Neural Memory that Lucy OS1 brings. Lucy remembers your projects, your calendar, and your preferences across every single conversation — without you having to repeat yourself.
Lucy outperformed Perplexity AI on 4 features and Google Gemini on 2 features in our full head-to-head comparisons. It reads your Google Calendar and Gmail before each session, and it is designed to stay open alongside your work — not just respond when you ask.
Try Lucy OS1 FreeCOMPARE PERPLEXITY AI WITH OTHER TOOLS
COMPARE GOOGLE GEMINI WITH OTHER TOOLS
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