Siri is device voice assistant 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:Siri 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 Siri and Google Gemini are solid for their core use cases; Lucy OS1 is the alternative if you want an AI that genuinely knows you.
SIRI · APPLE
Device voice assistant — "Your personal assistant that helps you get things done."
Pricing: Free — included with all Apple devices
GOOGLE GEMINI · GOOGLE
Generative AI assistant — "Your AI assistant — from Google."
Pricing: Free; Gemini Advanced $19.99/month (Google One AI Premium)
| Feature | Siri | Google Gemini |
|---|---|---|
| Cross-session memory |
No
Each conversation starts fresh with no memory of previous interactions
|
No
Gemini does not retain memory between conversations
|
| Reasoning quality |
Apple Intelligence
Strong for Apple-ecosystem tasks; limited for complex open-ended reasoning
|
Gemini 1.5 Pro / Ultra
Gemini Ultra is competitive with GPT-4o for many tasks
|
THERE IS A THIRD OPTION
While both Siri 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 Siri on 6 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 SIRI WITH OTHER TOOLS
COMPARE GOOGLE GEMINI WITH OTHER TOOLS
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