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IBM Releases Experimental Granite 4.1 LLMON Preview Models

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IBM researchers released two experimental preview models, granite-4.1-3b-LLMON-preview and granite-4.1-8b-LLMON-preview, trained to consume and generate LLMON, an LLM-native markup language using reserved special tokens to separate instructions from data. The team reports indirect prompt-injection attack success rates dropping to nearly zero on some benchmarks while general capability is maintained relative to Granite 4.1 Instruct. A GitHub toolkit and JSON converters accompany the release.

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