Given the diverse nature of the autism spectrum and the complex, context-dependent nature of Social Functioning (SF), this study aims to delineate profiles of SF in young people with autism. Using a multi-method approach, it aims to gain a comprehensive understanding of social difficulties in people with ASD. This study also examines the co-occurrence of mental health issues within these profiles, which can exacerbate social impairments. This understanding is essential for designing interventions and support systems tailored to the specific needs of people with ASD. 49 autistic individuals aged 12 to 30, without intellectual disability were recruited. A combination of measures was used to thoroughly assess SF. Latent profile analysis was employed to identify distinct profiles of social functioning. A control group of 60 non-autistic people served as a reference for these profiles. Mental health difficulties were evaluated through clinical interviews and questionnaires. Two profiles of SF were identified, illustrating two ways of managing the cost of social interactions. Compared to controls, one was more socially withdrawn, spending more time alone, while the other spent a similar amount of time alone but interacted less with others. A different prevalence of mental health problems was observed within these profiles. This study highlighted two SF profiles in young people with ASD, revealing different approaches to managing social interactions. These results show that people with ASD do not have uniform strengths and difficulties of SF, and that mental health problems exert a significant influence on different aspects of SF.