Speech recognition is actually orthogonal to AI. In my day the AI prototypes (like ELIZA) were basically chat bots. Speech recognition is now very sophisticated and accurate. Determining meaning from human language (spoken or written) is far more advanced than it used to be but still kinda sucks.
Yes, text to speech has become impressively good and can basically be relied upon. But siri/alexa still really disappoint me and dont seem to be much better than a list of basic rules one could program up.
