Posognos (/poh-SOH-noss/, "to know how much") is an independent clinical-AI safety research company. Its benchmark, PsiBench, evaluates whether AI systems are safe to make medication-safety decisions, using clinically validated scenarios authored by the clinical pharmacology experts whose work underpins the CPOE/EHR safety audit applied at more than 2,000 U.S. hospitals each year. Posognos evaluates frontier language models from across the industry using a three-tier framework that separates highest-stakes discrimination, the operational alerting regime, and category-correct attribution. Posognos is not funded by EHR vendors or AI labs, and publishes its results independently.

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Posognos

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