PURPOSE: to compare the average time for the speech therapy discharge among three therapy models related tor phonological disorders. METHOD: used data were obtained from the database of a higher education institution. The following inclusion criteria were adopted: age between 5:0 and 6:11; having parent or guardian permission to participate in the research; presenting diagnosis of phonological disorder classified as a mild or mild-moderate deviation and having received speech therapy through one of the phonological models: Cycles Model ; ABAB-Withdrawal and Multiple Probes Model or Maximal Oppositions Approach ; besides having had speech therapy discharge. The sample consisted of 38 children, eight treated by the Modified Cycles, 18 by the ABAB-Withdrawal and Multiple Probes, and 12 by the Maximal Oppositions. Data analysis counted the number of sessions in which there was direct speech therapy. The statistical analysis used the Statistical Analysis System, version 8.02, Kruskal-Wallis test with p <0.05. RESULTS: it was found that the average number of sessions for the Modified Cycles was 23.0, whereas it was 18.5 for the ABAB-Withdrawal and Multiple Probes, and 20.6 for the Maximal Oppositions. The research showed no statistically significant difference between the number of sessions in each therapy models. CONCLUSION: the three therapy models were equally effective, since that they promoted the speech therapy discharge and showed no significant difference in the average time of therapy for phonological disorder cases.