What's the best way to use wishes in Genshin Impact?

So I've assumed it was better to spend your wishes in batches of 10, but I've seen people online claiming it's either better or doesn't make a difference to use them one at a time. Apparently the pity 4* after 10 wishes is guaranteed whether you use a batch of 10 or one at a time.

Is this true? Is any method superior?

Solution 1:

It doesn't make a difference, besides for speed and flexing your 10-pull.

It's not just a claim, it's literally written in the game that you will get a guaranteed 4 star every 10 pulls and a guaranteed 5 star every 90 pulls (character banner) or 80 pulls (weapon banner).

Here's the relevant text for the current limited banner:

5-Star Items For Event Wish - Sparkling Steps: Base probability of winning 5-star character = 0.600%; consolidated probability (incl. guarantee) = 1.600%; guaranteed to win 5-star character at least once per 90 attempts.

4-Star Items For Event Wish - Sparkling Steps: Base probability of winning 4-star item = 5.100%; base probability of winning 4-star character = 2.550%, and base probability of winning 4-star weapon = 2.550%; consolidated probability (incl. guarantee) of winning 4-star item = 13.000%; guaranteed to win 4-star or above item at least once per 10 attempts.

There is no mention of 10-pulls - everything is counted per attempt and hence 10-pulls do not affect the guarantee nor odds.

Solution 2:

There’s no difference in statistics/pity pulls, but if you do 1x pulls then you’re more likely to have some left over after you get the character you want. Say you do a 10x pull on Ganyu’s banner and get her- she could have been the first pull in a line of 10, and now those other 9 wishes are wasted when they could have been used for other banners. Basically just helps to stop while you’re ahead!