This two-volume set, CCIS 2267 and 2268, constitutes the refereed proceedings of 5th International Conference on Artificial Intelligence and Speech Technology, AIST 2023, held in Delhi, India, during December 26-27, 2023.  The 71 papers presented in two volumes were carefully reviewed and selected from 235 submissions. Part I focuses on  Speech Technology using AI  and Part II focuses on  AI innovations for CV and NLP.  These volumes are organized in the following topical sections:  Part I:  Trends and Applications in Speech Processing; Recent Trends in Speech and NLP; Emerging trends in Speech Processing; Advances in Computational Linguistics and NLP.  Part II:  Recent Trends in Machine Learning and Deep Learning; Analysis using Hybrid technologies with Artificial Intelligence; Exploring New Horizons in Computer Vision Research; Applications of Machine Learning and Deep Learning.