Peer influence has a profound impact on decision-making in typically developing adolescents. In this study, we examined to what extent adolescent males (age 11–17 years; N = 144) with and without autism (ASD) were influenced by peer feedback on prosocial behavior, and which factors were related to individual differences in peer feedback sensitivity. In a public goods game, participants made decisions about the allocation of tokens between themselves and their group—in absence or presence of peer feedback. Adolescents with and without ASD were sensitive to peer feedback on prosocial behavior. More autism traits and social interest were associated with less sensitivity to antisocial feedback, suggesting that peer feedback creates opportunities for social adjustment in those with and without ASD.