Anthropic launched Claude Haiku 5.5, marking continued rapid iteration in the competitive large language model landscape. The release arrives as major tech firms including Meta and Microsoft actively discourage internal Claude adoption, signaling shifting vendor preferences among enterprise buyers. For healthcare AI implementations, this consolidation matters because it narrows the practical model options healthcare systems evaluate for clinical documentation, coding support, and care coordination tasks. The emerging pattern of enterprises choosing between a smaller set of LLM providers will likely influence EHR vendor partnerships and the cost structure of AI-augmented clinical workflows. Healthcare organizations should track these vendor dynamics closely as they lock in AI infrastructure decisions that will shape their value-based care capabilities over the next 18-24 months.