Anthropic Drops Version Numbers. What Fable 5 and Mythos 5 Mean for Your AI Stack
Anthropic launched Claude Fable 5 and Mythos 5 on 9 June 2026, scrapping version-number naming in favour of capability tiers. For growth teams using Claude in content pipelines or GEO workflows, this is now a real deployment decision with cost, quality, and brand-risk trade-offs baked in.