based off fine detail in Detail tab

Character Event Wish

50% chance to get a featured 5☆ character upon first 5☆ pull (same with featured 4☆)

100% chance to get a featured 5☆ character upon next 5☆ pull IF your previous 5☆ was not a featured character (same with featured 4☆)

➩ guaranteed 5☆ after 90 pulls, pity count will reset after obtaining a 5☆

➩ same with 4☆ with 10 pulls , pity count will reset after obtaining a 4☆

➦ This resets after every featured character pull, meaning you are guaranteed to get a featured 5☆ character every 180 pulls, guaranteed featured 4☆ character every 20 pulls.

Weapon Event Wish

75% chance to get featured 5☆ weapons upon first 5☆ pull (same with featured 4☆)

100% chance to featured 5☆ weapon upon next 5☆ pull IF your previous 5☆ was not a featured weapon (same with featured 4☆)

➩ guaranteed 5☆ after 80 pulls, pity count will reset after obtaining a 5☆

➩ same with 4☆ with 10 pulls, pity count will reset after obtaining a 4☆

➦ This resets after every featured weapon pull, meaning you are guaranteed to get a featured 5☆ weapon every 160 pulls, guaranteed featured 4☆ weapon every 20 pulls.

Standard Event Wish

➩ guaranteed 5☆ either weapon or character after 90 pulls, pity count will reset after obtaining a 5☆

➩ same with 4☆ with 10 pulls, pity count will reset after obtaining a 4☆

As confirmed by customer support, pities do carry over different featured banners as they do in Honkai.

➦ For example, if you’re 60 pulls into pity in the Character Event Wish (Venti) it will carry over to the next Character Event Wish (different character) and you would only need to pull 30 times to reach the pity. 

➦ Pities do not carry over from different kinds of banners. For example, it will not carry over from Character Event Wish to Standard Event Wish.

Single pulls will count towards pity.

➦ You will still get the increased chance of getting a 4* or above within each 10-wish set, singles or multi. Your exact pity count can be counted from the History tab from each banner.

Additional Notes: 

These are unconfirmed, based on the monetization test on CN in the Beginner Guide  which outlines most of what I wrote down about the pity system oops

➦ In a 10-wish set the 4☆ pity roll may have increased rates of pulling a 5☆

➦ If your remaining pulls until your 5☆ pity is less than 10 when you reach a 4☆ pity, you will always get a 5☆ on that pity. 

➦ For example, if your 4☆ pity will occur on pull 85 you will receive a 5☆ on that pity because the next pity would only be 5 pulls. 

If you are looking to maximize rates and pulls, single pulling is the best option. Looking at your pity count through history will also help.

Wish Banner Rates

The consolidated probability in brackets [] is the expected probability over a large sample size including guarantee pities.

Character Event Wish & Standard Event Wish

5☆ – 0.6% [1.6%]

4☆ – 5.1% [13%]

3☆ – 94.3% [85.4%]

Weapon Event Wish

5☆ – 0.7% [1.85%]

4☆ – 6% [14.5%]

3☆ – 93.3% [84.65%]

*detailed explanation on the pity system for those who don’t open up and read the banner details.