If you keep it warm, it will continue to fruit. It may slow down, but it will keep going. Feed it sparingly until the spring and then when it warms up, put it outside. The warmer it is, the hotter the chili.

I feed mine half strength tomato feed.
I harvested my chillies a few weeks ago and they are now resting in my bubble wrapped heated greenhouse until next year.
Scots Bonnet
Thai
Tepin
Birds Eye
To name a few.

Your chilli plants will slow down and soon stop producing chillies for this year.
Treat it as a house plant over winter. Cut it back after it has stopped producing fruit and after harversting.

See my blog for a chilli vodka recipe.