US Patent 12137118 Prompt injection classifier using intermediate results

An analysis engine receives data characterizing a prompt for ingestion by a generative artificial intelligence (GenAI) model. An intermediate result of the GenAI model or a proxy of the GenAI model responsive to the prompt is obtained. The analysis engine, using a prompt injection classifier and the intermediate result, determines whether the prompt comprises or is indicative of malicious content or elicits malicious actions. Data characterizing the determination is provided to a consuming application or process. Related apparatus, systems, techniques and articles are also described.