Umm what were you expecting it say?

Often called a “caret,” “hat,” “circumflex,” or “exponent.”...
May be the main use case could be considered. i.e., "exponent"

Ok. I think you would be best defining a dict to look up what these characters should say and send them to the engine. I"d be nervous of doing this in the engine of pyttsx3 though. Each engine does things differently- particularly espeak. Infact I wouldn"t mind betting carat actually means something else dependent on the language of the voice.

In short - if it says nothing it"s probably for good reason. The underlying speech engine either understands it and it isn"t what you are expecting or it doesn"t

Agreed! A dict for dialogue is safer since TTS engines handle symbols differently. For example, if you pass "2^3," the engine might not interpret it as "2 to the power of 3," and the user would expect that. My POV;