https://www.reddit.com/r/artificial/comments/4h23ja/what_are_the_programming_languages_used_for/From my own AI work towards the Singularity, I can report:
Perl is the programming language for the free, open-source state-of-the-art
http://ai.neocities.org/perlmind.txt Perl Ghost True AI which thinks in English and in Russian.
JavaScript was a predecessor language for the Tutorial programs AiMind in English and Dushka in Russian.
Forth was the predecessor language for MindForth in English and Wotan in German.
The Ghost Perl Webserver Strong AI is the latest port of the AI Minds in Forth and JavaScript first into freely available Strawberry Perl 5 and next (hopefully :-) into the newly released Perl 6. The Perl Ghost AI is not a chatbot with canned responses, but rather a genuine artificial intelligence based on concepts interacting on the basis of spreading activation. The Ghost AI is an AI engine that may be adapted and modified for other AI projects in fields such as Machine Learning, computer vision, and humanoid robotics. If such claims seem dubious to you, please announce right here any other genuine AI based on concepts and on an original neuroscientific Theory of Mind.