怎么开始：拿 key、充钱、算一笔账

Questions answered on this page

API key 在哪创建？
最低要充多少钱才能开始？
一美元大概能跑多少秒？

Sections

先说结论
开通三步
钱怎么算
一美元能跑多久
令牌怎么管
容易踩的坑
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