Google Gemini is generative AI assistant and ChatGPT is AI assistant with voice mode. We compared both — and added Lucy OS1 to the mix so you can see the full picture.
TLDR:Google Gemini and ChatGPT 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 Google Gemini and ChatGPT are solid for their core use cases; Lucy OS1 is the alternative if you want an AI that genuinely knows you.
GOOGLE GEMINI · GOOGLE
Generative AI assistant — "Your AI assistant — from Google."
Pricing: Free; Gemini Advanced $19.99/month (Google One AI Premium)
CHATGPT · OPENAI
AI assistant with voice mode — "Get answers. Find inspiration. Be more productive."
Pricing: Free tier available; ChatGPT Plus $20/month, Pro $200/month
| Feature | Google Gemini | ChatGPT |
|---|---|---|
| Cross-session memory |
No
Gemini does not retain memory between conversations
|
Partial — opt-in
ChatGPT Memory is opt-in and summarises facts rather than full session recall
|
| Reasoning quality |
Gemini 1.5 Pro / Ultra
Gemini Ultra is competitive with GPT-4o for many tasks
|
GPT-4o / o1 / o3
ChatGPT Pro subscribers access o1, o3 reasoning models
|
THERE IS A THIRD OPTION
While both Google Gemini and ChatGPT 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 Google Gemini on 2 features and ChatGPT on 5 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 GOOGLE GEMINI WITH OTHER TOOLS
COMPARE CHATGPT WITH OTHER TOOLS
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