British and American English differ in their use of prepositions after the word ‘different’. South African usage
follows the British.
‘Different from’, ‘different to’, and ‘different than’ all have the same sense of meaning.
Both ‘different from’ and ‘different to’ are both used in British English. ‘Different than’ is commonly used in American
English (although Strunk & White disapproves). ‘Different to’ is not used in American English.
Respected writers have used all three forms, although ‘different from’ is traditionally held to be more correct and is by far the most common in written use.
My advice is to stick to ‘different from’. Few, if any, will criticise this usage.