The existence of a general factor related to psychiatric symptoms is supported by studies using a variety of methods and in both clinical and nonclinical samples. This study aims to evaluate the psychometric properties of Brief Symptom Inventory assessing the hypothesis that its scores fits better in a bifactor model with both general factor and specific cluster of symptoms. Participants were 6,427 brazilian subjects (81% female). The mean age was 42.1 years old (SD = 13.6, Min = 13, Max = 80). All participants fulfill the online version of the Brief Symptom Inventory. This scale presents a general score (GSI) and nine specific cluster of symptoms (depression, anxiety, phobic anxiety, interpersonal sensibility, psychoticism, paranoid ideation, obsessive-compulsive, hostility and somatization symptoms) Confirmatory factorial analysis was performed to assess the factorial BSI structure. Results supports the bifactorial solution for BSI. Nonetheless, the general factor was the main dimension to explain the variability of examinees. The use of the nine specific clusters of symptoms remains useful to assess specific clinical and research questions.