Tokens economics

Hello again. I first time used paid api with glm 4.7. It’s great, compared to j ai, but I have a question.
Character has around 5k tokens. My persona around 200-300 tokens. Why api says that llm used around 19k tokens per one message? Is it ok for glm? Or it’s because my lore books? Aren’t lorebooks must be token friendly? Or I just make every thing wrong with them?
Help me, please, find out the reason