The widespread integration of artificial intelligence into teacher training raises tensions between promise of algorithmic objectivity and ethical issues. This article examines how AI is transforming professional subjectivity and the hierarchy of values in the teaching and training profession. Based on a critical analysis of international standards (UNESCO, OECD) and a review of the literature (2020- 2025), we propose an axiological framework for interpretation. We show that AI is not just a technical skill but an explicit axiological issue present in all training and assessment systems.