Carry on about mass artificial intelligence to fan base (6)

I believe the answer is:

remain

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'carry on' is the definition.
(remaining is a kind of carrying on)

'about mass artificial intelligence to fan base' is the wordplay.
'about mass' becomes 'rem' (I can't explain this - if you can you should believe this answer much more).
'artificial intelligence' becomes 'AI' (synonyms).
'base' suggests the final letters (the base of the word).
The final letter of 'fan' is 'n'.
'rem'+'ai'+'n'='REMAIN'

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(Other definitions for remain that I've seen before include "Stay on when others have left" , "Stay (in a place)" , "Continue in position" , "Stay around" , "Airmen (anag.)" .)

I've seen this clue in the Sydney Morning Herald.

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