Hi José,
But.. how do you recognize so many languages? (I'm confused, as you say you are using an english model and the "online dictation" page recognizes other languages as well...)
kiku is only able to recognize English (15k words) and Japanese (60k words). The web page use HTML5 "x-webkit-speech" on Google Chrome and it's a complement to kiku since the accuracy of the English acoustic model is not yet ready for dictation. so kiku = single word recognition and the web page a complement for dictation.
http://www.workinprogress.ca/KIKU/dictation.php
à +