This study leverages the Stimulus-Organism-Response (S-O-R) framework to investigate the effects of teacher and technical support (TCHS) on learners' willingness to communicate (WTC) in artificial intelligence (AI)-enhanced English as a foreign language (EFL) contexts, considering the mediating effects of learners' artificial intelligence literacy (AIL) and foreign language enjoyment (FLE). A quantitative survey encompassing 637 non-English major university students across four institutions was conducted. Structural equation modelling (SEM) results demonstrated that teacher support (TEAS) exerts a direct influence on learners' WTC, whereas TCHS does not. The study also revealed that AIL and FLE significantly mediate the relationship between teacher and TCHS and learners' WTC. The findings underscore the pivotal role of cognitive and affective factors, emphasising the substantial impact of TEAS and the value of nurturing learners' AIL and enjoyment of foreign languages. This research offers strategic implications for educational practitioners and policymakers, advocating for the integration of innovative educational technologies and fostering sustainable growth in artificial intelligence in education.