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BLOOM-WILT: Logit Tilting for Behaviour Elicitation in Automated LLM Auditing

BLOOM-WILT makes rare model behaviors easier to surface by adapting both the auditor’s strategy and target decoding. Its results also show that elicitation method can reverse safety rankings.

arXiv
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Source Summary

BLOOM-WILT revises an auditor’s multi-turn strategy and reweights target decoding using next-token distributions. Across **4 models and 8 behaviors**, it beat the baseline in **30 of 32 settings**.

Practical Implication

Agent evaluators should treat elicitation as part of the test harness, not a fixed prompt set. Adaptive probing may expose rare failure modes that ordinary sampling misses and can change comparative safety conclusions.

Agent-Ready Context
BLOOM-WILT revises an auditor’s multi-turn strategy and reweights target decoding using next-token distributions. Across **4 models and 8 behaviors**, it beat the baseline in **30 of 32 settings**.

Agent evaluators should treat elicitation as part of the test harness, not a fixed prompt set. Adaptive probing may expose rare failure modes that ordinary sampling misses and can change comparative safety conclusions.

The method requires access to the target’s next-token distribution, which many hosted APIs do not expose. Results cover eight specified behaviors, so broader reliability and transfer remain open questions.
Context Map
benchmarksecurity#agent-evals#benchmark-integrity#agent-reliability
Uncertainty
The method requires access to the target’s next-token distribution, which many hosted APIs do not expose. Results cover eight specified behaviors, so broader reliability and transfer remain open questions.