免费 AI 工具
为使用大语言模型的人准备的小工具。全部在浏览器中运行，输入的内容不会上传，每个工具都会链接到讲解它的课程阶段。
AI Token Counter
Paste any text to see exactly how a language model will split it into tokens — the units that decide what you pay and how much of the context window is left. The counter runs entirely in your browser.
LLM API Cost Calculator
Turn a token count and a traffic guess into a real monthly bill. Set the prompt size, the answer size and how many requests you expect, and every priced model is compared side by side.
完全在浏览器中运行 —— 你输入的内容不会离开本页。