Anthropic 官网 2025 年披露的周用量上限显示，Max 20x（$200）每周可用 Sonnet 240–480 小时，Max 5x（$100）为 140–280 小时，前者用量仅约 1.7 倍而非 4 倍，价格却是两倍。因此一旦触及周上限，用户并非"省 50%"，而是每小时可用量的实际单价更高，"Save 50%"的说法完全不成立。
Down the rabbit-hole it gets worse and worse. Anthropic’s “Save 50%” claim makes even less sense than I thought.
The label suggests that the $200 Max 20x plan gives you four times the usage of the $100 Max 5x plan for only twice the price. We already figurer that out.
But Anthropic’s own website disclosed very different weekly limits in 2025:
Max 5x: 140–280 hours of Sonnet per week
Max 20x: 240–480 hours of Sonnet per week
That is only around 1.7x more weekly usage, not 4x, despite costing twice as much.
So once you hit the weekly limit, you are not saving 50%. You are effectively paying more per expected hour of usage. Save 50% doesnt make any sense at all.
来源：@kimmonismus · x.com