Google launched a very interesting tool that offers suggestions as you type: Google Scribe. It’s not exactly the service I anticipated 3 years ago, but Google Scribe works surprisingly well. For example, I started to type “This works sur” and Google suggested “This works surprisingly well”, which is exactly what I wanted to type. Instead of typing 14 characters, I could only type “1” or press Enter to select the first suggestion
[From Google Scribe]
Why am I just finding out about this? How in the world did I miss this.
I assume it uses their ngram database for quad and 5 grams.