A modern tool for deep diving into Russian vocabulary with sentence-driven declension memorization, accurate and natural text generation for words and sentences. The generation is focused on the typical usage appearing in the context of word definition. What's more, even a textbook can be customized according to your learning status where the AI backed by GPT-5 is used to give detailed analysis on collected sentences. Theoretically, you can stay in the rurussian to keep long-term learning.