It is “all right” to be “alright”, is it not?

Are there any differences between “all right” and “alright”? Can they be used interchangeably? According to Dictionary.com, they mean the same except “all right” is the formal standard while “alright” is not. If you want to use the single word, it should only be utilised in a dialogue.

You will find that Grammarly blog and the YouTube video from Miriam-Webster below concur with more elaborate explanations.

I will not be surprised if one day "alright" will be accepted officially. However, at the moment the English teacher (or anyone else concerned with proper English use) will not be pleased with its usage. Ultimately, in most situations, it is quite “all right” to use “alright”, especially in modern context unless you are being graded.