Behavior Forecasters trained on LRM trajectories outperform larger models in predicting repeatability and input sensitivity at low cost.
Forecasting rare language model behaviors
5 Pith papers cite this work. Polarity classification is still indexing.
abstract
Standard language model evaluations can fail to capture risks that emerge only at deployment scale. For example, a model may produce safe responses during a small-scale beta test, yet reveal dangerous information when processing billions of requests at deployment. To remedy this, we introduce a method to forecast potential risks across orders of magnitude more queries than we test during evaluation. We make forecasts by studying each query's elicitation probability -- the probability the query produces a target behavior -- and demonstrate that the largest observed elicitation probabilities predictably scale with the number of queries. We find that our forecasts can predict the emergence of diverse undesirable behaviors -- such as assisting users with dangerous chemical synthesis or taking power-seeking actions -- across up to three orders of magnitude of query volume. Our work enables model developers to proactively anticipate and patch rare failures before they manifest during large-scale deployments.
years
2026 5representative citing papers
Regenerating model responses on de-identified production conversation prefixes yields pre-deployment misbehavior rate forecasts that track realized production rates within 2-5x and outperform adversarial-prompt baselines.
SCARCE uses learned latent representations and adaptive thresholding to achieve 400-500x lower error than traditional subset simulation for MNIST misclassification and low relative error on LLM jailbreak probabilities.
Non-model gains via inference, systems, and assets can drive AI capabilities independently of base models, requiring governance beyond model-level evaluation and mitigation.
citing papers explorer
-
Forecasting Future Behavior as a Learning Task
Behavior Forecasters trained on LRM trajectories outperform larger models in predicting repeatability and input sensitivity at low cost.
-
Predicting LLM Safety Before Release by Simulating Deployment
Regenerating model responses on de-identified production conversation prefixes yields pre-deployment misbehavior rate forecasts that track realized production rates within 2-5x and outperform adversarial-prompt baselines.
-
SCARCE: Scalable Cascade Analysis for Rare-event Characterisation via Embeddings
SCARCE uses learned latent representations and adaptive thresholding to achieve 400-500x lower error than traditional subset simulation for MNIST misclassification and low relative error on LLM jailbreak probabilities.
-
Comprehensive AI governance requires addressing non-model gains
Non-model gains via inference, systems, and assets can drive AI capabilities independently of base models, requiring governance beyond model-level evaluation and mitigation.
- Estimating Tail Risks in Language Model Output Distributions