The lifelong AI companion

One AI. One Memory.
Every Device.

LEX is a lifelong AI companion — one identity, one memory, one presence that follows you across every screen you own.

Download LEXSee how it works
Private by designReal long-term memoryLocal, cloud or hybrid
LEX

Everything connected to one LEX

Who is LEX

Not a chatbot. A companion.

LEX isn't another chat window you open and forget. It's one persistent digital companion built to grow with you across years — remembering your world, understanding your context, and staying entirely yours.

LEX
Why LEX exists

Your AI should belong to you.

Today's assistants forget you the moment a session ends and scatter across disconnected apps. LEX was built to end that — one identity that owns your memory, on infrastructure you choose to trust.

Privacy
Where does my data live?
Wherever you choose — on your device, in your private cloud, or a hybrid of both. You decide, and you can change it anytime.
Why LEX is different

One mind, everywhere.

Desktop, phone, browser, glasses — they aren't separate products. They're windows into the same LEX, with the same memory, personality and knowledge behind every one.

One mind
Continue on my phone.
Already there — same memory, same context, same conversation. Nothing to re-explain.
See it in motion

One conversation. Every device.

Start on your laptop, continue on your phone, glance at it on your glasses — LEX never loses the thread.

Now on · WindowsLEX
Plan my trip to Tokyo next month.
Saved to memory. I'll track flights, weather and your budget as it gets closer.
What did we decide about Tokyo?
Everything's here — your dates, budget and the three neighbourhoods you liked. Want the packing list?

Same memory. Same context. Zero re-explaining.

Capabilities

Everything LEX brings to your day

Built as a complete AI environment — not a single feature, but a companion that sees, hears, remembers and acts.

Real memory

LEX remembers your context, preferences and history — and recalls them naturally, whenever they matter.

Natural voice

Speak instead of type. LEX listens, understands and replies in a natural, human voice.

Vision

Show LEX your screen or the world around you. It sees, reads and understands what you're looking at.

Workspace

Notes, tasks, files and projects live beside your conversation — one calm, focused space.

One identity

The same LEX on every device. Your memory and personality follow you — devices are just windows.

Private by design

You choose where your data lives. Local, cloud or hybrid — always your call, never a default you can't change.

Your data, your rules

Local, cloud or hybrid — you decide

LEX is built around a simple promise: you always control where your memory lives.

Cloud

Your content on LEX Cloud, synced to every device automatically. The easiest way to stay in sync.

Local

Keep everything on a device or server you control. Nothing leaves your hardware.

Hybrid

Local-first thinking with automatic cloud backup — the best of both, day to day.

One identity

Start on your desktop. Continue on your phone. Never repeat yourself.

LEX is one continuous companion, not a set of disconnected apps. Sign in anywhere and your entire memory, personality and context are already there.

  • One account across desktop, mobile and glasses
  • Your memory and preferences travel with you
  • Pick up any conversation exactly where you left off
  • End-to-end continuity, zero re-explaining
One identity
Remind me what I decided about the launch plan.
On your phone last week you set the launch for the 14th and asked me to draft the announcement. Want me to open that draft?

LEX for organizations

Bring one secure AI companion to your whole team — shared knowledge, central administration, higher limits, and commercial support.

Explore Enterprise
The road ahead

A companion measured in years, not sessions.

LEX is on a long journey — richer memory, deeper understanding, more devices, and increasingly its own on-device intelligence. It only becomes more capable, and more yours, over time.

Meet the AI that actually knows you.

Download LEX and start building a companion that remembers, understands and grows with you.

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