How old is duolingo?

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

December 31, 2012

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  • 1936

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).

December 31, 2012
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