Cursor 计费策略是个谜

今天猛猛用 opus4.5 ，然后看账户里面已经 35 刀了，但是 pro 号不应该只有 20 刀余额么？

| Item                          | Tokens        | Cost              |
|-------------------------------|---------------|-------------------|
| **Included in Pro**           |               |                   |
| Auto                          | 7692.2 万     | US$28.76 Included |
| claude-4.5-opus-high-thinking | 637.4 万      | US$6.93 Included  |
| gpt-5.2                       | 16.5 万       | US$0.17 Included  |
| **Total**                     | **8346.1 万** | **US$35.85 Included** |