Usage and length limit guide adds Ultra tier rules

This support document explains how usage and conversation size constraints function across Claude subscription tiers. The updated text expands its coverage beyond Pro and Max tiers to include Ultra accounts, while providing specific explanations for session-based and recurring caps. Under the newly clarified rules, most users operate under a five-hour rolling allowance that triggers upon sending an initial message and fully refreshes once that duration elapses. However, verified Ultra accounts are exempt from this five-hour threshold entirely. In addition, the page introduces cross-model weekly limits that renew at a predetermined schedule assigned to each profile, along with dedicated weekly allowances for specific features like Fable on select plans. Subscribers can track remaining capacity and upcoming refresh times in their account settings. For everyday users, these updates make clear that higher spending tiers receive distinct operational rules and that usage pacing involves both short-term windows and fixed weekly ceilings. What the document does not detail are the precise numerical allowances for each tier, the criteria or verification steps required to validate an Ultra account, or the exact threshold at which discretionary capacity throttling might occur.