Robot-assisted language learning (RALL) is a direction in education that uses robots in the process of studying foreign languages. In this paper, we present the results of our research work devoted to studying trends in the quantity of publications in the field of using social robots for learning foreign languages. Additionally, we have analyzed some published paper in the field of RALL, which has allowed us to identify several popular robot models used in practical research in recent years. Among these models were the NAO, Pepper and DARWIN OP-2 robots. We have found that these robots are actively used in the educational process for learning foreign languages. In particular, these models are used to improve language and communication skills during implicit learning and interactive games.