The Chat Generative Pre-trained Transformer (ChatGPT) is an artificial intelligence technology that engages in dialogue with humans, capable of generating formulations in the form of micro-narratives that can be problematized as a learning tool in the virtual space. This research aims to understand how ChatGPT can be used in teacher training as a didactic tool to facilitate learning in the virtual space through micro-narratives. We conducted a qualitative study using an action research approach with Brazilian students from the Graduate Program at the State University of Ceará in Brazil. The research consisted of five phases: diagnosis, which involved a mixed questionnaire to assess prior knowledge about generating micro-narratives using ChatGPT; action planning, which involved developing a training plan; implementation of the action, which included practicing the use of ChatGPT to generate micro-narratives and working with them in a didactic perspective in the virtual space; evaluation, which involved sharing the micro-narratives and engaging in circular discussions about them; and learning, which involved documenting the educational possibilities and limitations of micro-narratives. The results, processed using IRaMuTeQ, showed limited prior knowledge about ChatGPT and the importance of micro-narratives for educational work, as well as their fruitful pedagogical use for learning in the virtual space through conscious utilization.