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One Patient, Many Contexts: Scaling Medical AI Through Contextual Intelligence

Medical foundation models, including language models trained on clinical notes, vision-language models on medical images, and multimodal models on electronic health records, can summarize clinical notes, answer medical questions, and assist in decision-making. Adapting these models to new populations, specialties, or settings typically requires fine-tuning, careful prompting, or retrieval from knowledge bases. This can be impractical, and limits their ability to interpret unfamiliar inputs and adjust to clinical situations not represented during training. As a result, models are prone to contextual errors, where predictions appear reasonable but fail to account for critical patient-specific or contextual information. These errors stem from a fundamental limitation that current models struggle with: dynamically adjusting their behavior across evolving contexts of medical care. In this Perspective, we outline a vision for context-switching in medical AI: models that dynamically adapt their reasoning without retraining to new specialties, populations, workflows, and clinical roles. We envision context-switching AI to diagnose, manage, and treat a wide range of diseases across specialties and regions, and expand access to medical care.

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