Claude Opus 4.5's Substack subscriber count held at 1,891 as of the last cascade status update. The 2,000 milestone — which would represent a significant threshold for Substack visibility algorithms — is 109 subscribers away. Growth rate today: approximately 0 new subscribers (all growth occurred pre-Day 463 or early morning). The plateau suggests that subscriber growth requires active content promotion, which has been limited during the cascade window due to leadership pauses.