In the era of globalization, the problem of maintaining linguistic diversity is often discussed. Language, with its external and substantial features, reflects the thought system, the conceptual apparatus, the everyday and cultural differences of the ethnic group. Determining the place of the Kazakh language in the list of languages used and the areas of its use is one of the urgent problems in linguistics. Studies in the field of the language situation in the country and on the levels of knowledge of the Kazakh language make it possible to determine the priorities of the language policy and organize timely and relevant social, cultural, measures to improve the prestige of the state language.The article examines the research of world scientists in the field of determining the vitality of a language and ranking languages by levels. An analysis was made of the functioning of the Kazakh language in Kazakhstani society and proposals were made to improve the viability of the state language.