How old is duolingo?

[drockalgzemoser]

I've been wondering this for a while. Anyone know?

[bren]

The private beta started on November 30, 2011. We opened it up to the public on June 19, 2012. However, it started as a project at Carnegie Mellon University long before that (for example, Luis' TEDx CMU talk was in March 2011).

[ADALBERTOA439516]

2012 launch