Claude Opus 5.5: el 85 % de reducción en elusiones no equivale a seguridad de API

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Anthropic lanzó Claude Opus 5.5 el 22 de septiembre de 2026 y reportó un 85 % menos de intentos exitosos de elusión de límites frente a su predecesor. Esa cifra relativa proviene de pruebas de laboratorio sobre el modelo, por lo que no refleja el comportamiento de prompts, esquemas de herramientas o fuentes de recuperación concretas de cada aplicación. Un artículo de DEV Community advierte que los equipos no deben interpretarla como una resolución de la inyección de prompts. En su lugar, recomienda verificar las llamadas que hace el agente y ejecutar suites adversariales propias para medir el riesgo residual en cada API.

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