Yes, Ari and Summer do end up together.
The Journey to Becoming a Couple
The romantic relationship between Ari and Summer progresses throughout their story. Initially, Summer made it clear to Ari that she would not pursue a relationship with him while he was still involved with Wren. She emphasized that for them to be together, he would first need to break off his relationship with Wren.
This pivotal moment set the stage for their eventual union. By the conclusion of Season 2, Ari takes a significant step in their dynamic by finally ending his relationship with Wren. This decision clears the path for him and Summer. The season culminates with Ari and Summer sharing a kiss at the competition after-party, solidifying their connection and marking the beginning of their relationship as a couple.