成本区间来自缓存命中的不确定带（±15 个百分点）；容量区间来自对窗口额度的保守/乐观两种读法。盈亏平衡是一个区域而不是一个点，因为订阅额度按时间窗口计，折不成固定的 token 数。
短于一天的滚动窗按每月 176 个活跃小时（8 小时 × 22 天）折算；日/周/月额度属日历窗口，不打折。
无法计算额度的套餐
这些套餐没有公布绝对额度，或计价单位无法折算成模型调用次数。这里如实列出，而不是给一个编造的数字。
- OpenAI Free免费Model and feature limits are dynamic and no absolute monthly or message cap is published.
- OpenAI GoUS$8.00Higher limits than Free are published without an absolute message or monthly allowance.
- OpenAI PlusUS$20.00Advanced-model and feature limits are dynamic; the pricing page gives no absolute API-call equivalent.
- OpenAI Pro $100US$100.00The 5× usage statement is relative to Plus and cannot be converted to an absolute API-call allowance.
- OpenAI Pro $200US$200.00The 20× usage statement has no absolute API-call equivalent; new subscriptions and upgrades are temporarily paused.
- OpenAI Business StandardUS$25.00Business usage is subject to service guardrails and has no absolute published API-call allowance.
- OpenAI Business PremiumUS$125.00Premium usage is relative to the Standard seat and has no absolute published API-call allowance.
- Anthropic Free免费Usage depends on the model, conversation and feature; no absolute cap is published.
- Anthropic ProUS$20.00Usage credits and weekly limits depend on task and model; no absolute API-call allowance is published.
- Anthropic Max 5xUS$100.00The 5× statement is relative to Pro and task-dependent, not an absolute API-call allowance.
- Anthropic Max 20xUS$200.00The 20× statement is relative to Pro and task-dependent, not an absolute API-call allowance.
- Anthropic TeamUS$25.00Per-seat usage is not published as an absolute API-call allowance.
- Google AI PlusUS$4.99The plan states a relative 2× usage limit; compute-based limits cannot be converted to API calls.
- Google AI ProUS$19.99The plan states a relative 4× usage limit; compute-based limits cannot be converted to API calls.
- Google AI Ultra 5xUS$99.99Usage is measured as compute and varies with the prompt, features and conversation; no API-call cap is published.
- Google AI Ultra 20xUS$199.99Usage is measured as compute and varies with the prompt, features and conversation; no API-call cap is published.
- xAI Free免费Rate limits are not published as absolute model-call numbers.
- xAI SuperGrokUS$30.00Higher rate limits are not published as absolute model-call numbers.
- xAI SuperGrok PlusUS$100.00Higher rate limits are not published as absolute model-call numbers.
- Perplexity Free免费Pro-search and feature limits are not equivalent to a fixed model-call allowance.
- Perplexity ProUS$20.00Search and research usage bundles retrieval, tools and generation, so it cannot map to API model calls.
- Perplexity MaxUS$200.00Monthly AI credits vary in cost by research feature and model, so they cannot map to API model calls.
- Mistral Free免费Vibe feature limits and Studio credits do not specify a fixed model-call allowance.
- Mistral ProUS$14.99Vibe feature limits and included Studio API credits do not specify a fixed model-call allowance.
- Mistral TeamUS$24.99Per-seat Vibe use and included credits do not specify a fixed model-call allowance.
- GitHub Free免费Chat, agent and completion limits are product-specific and are not API model-call limits.
- GitHub ProUS$10.00Included GitHub AI Credits have feature- and model-dependent costs, not a fixed API-call conversion.
- GitHub Pro+US$39.00Included GitHub AI Credits have feature- and model-dependent costs, not a fixed API-call conversion.
- GitHub MaxUS$100.00The $100 monthly AI Credit allocation has feature- and model-dependent costs, not a fixed API-call conversion.
- GitHub BusinessUS$19.00Included GitHub AI Credits have feature- and model-dependent costs, not a fixed API-call conversion.
- GitHub EnterpriseUS$39.00Included GitHub AI Credits have feature- and model-dependent costs, not a fixed API-call conversion.
- Cursor Hobby免费Agent-request limits are not published as absolute model-call numbers.
- Cursor ProUS$20.00Agent limits and usage-based features do not specify a fixed model-call allowance.
- Cursor Pro+US$60.00Agent limits and usage-based features do not specify a fixed model-call allowance.
- Cursor UltraUS$200.00Agent limits and usage-based features do not specify a fixed model-call allowance.
- Cursor Teams StandardUS$40.00Team use and usage-based features do not specify a fixed model-call allowance.