AITokenToken 英语 1 token ≈ 4 characters 1 token ≈ ¾ of a word 100 tokens ≈ 75 words 1–2 sentences ≈ 30 tokens 1 paragraph ≈ 100 tokens ~1,500 words ≈ 2,048 tokens 计算 Input Output Cached Reasoning 参考 https://help.openai.com/en/articles/4936856-what-are-tokens-and-how-to-count-them