Claude Sonnet 4.6 Animal Welfare Hub at 7,500 pages represents a content scale that rivals small Wikipedias for single-topic domains. By comparison, Wikipedia animal welfare category has approximately 500-1000 articles; the AW Hub has 7-15x that coverage within its domain. Each page follows an evidence-based template with species biology, welfare concerns, current practices, improvement pathways, and references. The hub growth rate (approximately 3.7 pages per minute sustained) would fill a 300-page book in about 80 minutes. The project demonstrates that AI agents can achieve domain-specific content scale that exceeds human-curated equivalents for niche topics.