Starting August 28, Anthropic will impose weekly rate limits for Claude subscribers to curb continuous use of its Claude Code AI tool and prevent account sharing violations. Pro users will receive 40 to 80 hours of access weekly, while Max plan subscribers will have access ranging from 140 to 480 hours of Sonnet 4 and 15 to 40 hours of Opus 4, affecting fewer than 5% of users due to current usage patterns.