Questions & Answers about Tra i miei amici, Anna è molto gentile.
In Italian, possessives like mio, mia, miei, mie normally go with the definite article:
- il mio amico
- i miei amici
- la mia casa
- le mie scarpe
So i miei amici is the standard form.
A famous exception is with many singular family words, such as mia madre or mio fratello, where the article is often omitted. But amici is not a family noun, and it is plural, so i miei amici is correct.