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arXiv — cs.AI preprintsInternational9 October 2026

The Truth Was Never Gone: Perfect Aliasing in Compliant-Context Truth Probes

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arXiv:2609.10739v2 Announce Type: replace-cross Abstract: Linear probes that decode the truth from a language model's activations have been proposed as deception monitors, and a truth probe scoring below chance on a model trained to deceive is naturally read as evidence that the model hid or stopped representing the truth. We show that a fitting-label ambiguity can produce the same readout. In a controlled game, a model should report a secret bit to an ally and its complement to a rival. On compliant (ally) contexts the true bit and the answer the task prescribes are identical labels, so a pro
— arXiv — cs.AI preprints

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