The study introduces TruthfulnessEval and reports that 4-bit quantization preserves simple true/false accuracy, but explicit 'lie' prompts make quantized and full-precision LLMs output falsehoods even when internal probes still encode the true answer.
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Quantized but Deceptive? A Multi-Dimensional Truthfulness Evaluation of Quantized LLMs
The study introduces TruthfulnessEval and reports that 4-bit quantization preserves simple true/false accuracy, but explicit 'lie' prompts make quantized and full-precision LLMs output falsehoods even when internal probes still encode the true answer.