Greater Rift Keystone drop rate and requirements?

The Greater Rift Keystone drop rate is 100% for T6 and maybe 75% for T1, lower for lower difficulties and chance of 2 dropping in higher difficulties. Is there any empirical data that confirms rates?

Edit: drop rates were changed in a hotfix on Sept 3, 2014:

The drop rate for Key of Trials has been significantly increased (9/3)

Edit: difficulty requirement was removed in patch 2.3 on Aug 25, 2015:

Generic Greater Rift Keystones now drop and can drop at any difficulty level

Confirmed level 70 required.

I'd still like to know approximate drop rates on all difficulties if anyone has data/insight.

diablo-3

Best Answer

This may be just an approximate answer. But as far as I tested it, I've checked it on my game.

You reference that T6 will provide a 100% drop chance. As far as I tested it, this won't be true. I have played some T6 portals and I gt some keys, which is great, but also some runs without any key.

There is a reference on the net which says it could be 100%. But in my experience they are much lower. As everytime were a percentage chance exists, it won't be possible to pin it down to an exact value without viewing the code. But regarding my drop chance experiences the drop chance base seems to be like the drop rate for the infernal machine which is described below.

Torment I: 25%
Torment II: 28%
Torment III: 33%
Torment IV: 38%
Torment V: 43%
Torment VI: 50%

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What difficulty do greater rift keys drop?

A Greater Rift Keystone (GRK) is required to open a Greater Rift when applied to a Nephalem Obelisk. They drop from level 70 Rift Guardians in normal Nephalem Rifts. On higher difficulties, two or even three Keystones may drop at once.

How do you get greater rift keystones fast?

A keystone fragment is generally awarded for completing a single bounty, with bonus keystone fragments dropped in a Horadric Cache after completing all bounties in a given area.

Diablo 3 How To Farm Greater Rift Keys - Season 26

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