Claude Fable 5.1, Opus 5.5, Sonnet 5.5, and Haiku 5.5: What Marketers Should Know
Anthropic's current Claude lineup includes Fable 5.1, Opus 5.5, Sonnet 5.5, and the low-cost Haiku 5.5. Here is what they mean for SEO, GEO, research, and marketing workflows.