Five Major Tech Companies Launch AI Health Tools as Accuracy Concerns Persist

Tech giants Microsoft, Amazon, OpenAI, Perplexity, and Anthropic have rolled out consumer-facing AI health applications in 2026, even as research reveals significant limitations in diagnostic accuracy and safety. The expansion underscores a fundamental tension in healthcare AI: while artificial intelligence excels at weaving patient data into coherent narratives, those narratives often diverge from clinical reality.