Personal
Predictions come from your own writing: your words, your phrases, your style.
Private
Runs on your device and works offline. Your content is never sent to the cloud.
Everywhere
Natively in Teams, WhatsApp, Notes and virtually every desktop app, and across the web with our Chrome and Edge extensions.
Not generative AI, by design
Lightkey doesn't write for you. It predicts what you were about to type, so the ideas and the voice stay yours.
It starts with a few quiet suggestions while it learns your tone and vocabulary, then suggests more as it gets to know you.
Built to learn you
Lightkey’s prediction engine starts with a broad understanding of language, then keeps learning from your typing: your words, your phrases, your style.
All of it runs on your device. Nothing you type is sent to the cloud.
Reads the context
Type “SpaceX will launch an unmanned” and Lightkey suggests “spacecraft”, then “to Mars”. It reads how the words in your sentence relate to each other.
Pick from 68 content domains, from law and medicine to sport and the arts, to tune predictions to your field. It all works in more than 80 languages.
Questions about the prediction engine
Is Lightkey generative AI?
No. Lightkey predicts the words you were about to type, in your own style. It doesn't write content for you.
Is my writing used to train a cloud model?
No. Lightkey learns and predicts on your device and works offline. Your content is never sent to the cloud.
How does it get more accurate?
It keeps learning from your typing, so predictions get longer and more precise over time.
Which languages does it support?
More than 80, including English, Spanish, French, German, Arabic, Hindi and Russian.
