see - https://www.youtube.com/watch?v=cxHIQL411f4

Benefits from this method: Much faster than merchant runs and gives more xp+gold
Powerlevel from 1-70 in under a hour
You can go from paragon level 1 to 200 in under a day
I myself won't be using this method to farm paragon as it seems like a major exploit but who knows. Maybe blizzard may patch this so take advantage of it as you wish.

Act 1 - Sword of the Stranger

1). Have a level 1 join and start the quest on T6.
2). Start the Khazra Den
3). Finish the quest
4). Once on quest to turn in the sword have the lvl 1 give you party leader
5). Now you are at T6 just turn in the quest and leave instantly before quest gets ruined (this is the exploit part)
6). repeat = Win

You HAVE to do this with a party or it won't work! Also the person turning in the quest has to leave asap before the quest is turned in. Everybody else has to stay where they are.
If they move one bit it will auto checkpoint.
This is where the exploit happens by the person turning in the quest. The one turning in won't get the xp! So make sure you take turn leveling each other up!

First paragon 700 was earned this way.

This is also why so many has started doing leveling services.

anyone want to try this and confirm if it works?

of course it works its been in the game for weeks. just make sure to pass the leader so game becomes torment 6 quest hand in.

they already nerfed the reward

does this still work?

This was nerfed. Quest pays spmething like 8k xp now instead of 12 mil

dusnt wurk fgut

This was fixed

Duuuh