Estimating Tail Risks in Language Model Output Distributions
Quick summary
arXiv:2604.22167v3 Announce Type: replace-cross Abstract: Language models are increasingly capable and are being rapidly deployed on a population-level scale. As a result, the safety of these models is increasingly high-stakes. Fortunately, advances in alignment have significantly reduced the likelihood of harmful model outputs. However, when models are queried billions of times in a day, even rare worst-case behaviors will occur. Current safety evaluations focus on capturing the distribution of inputs that yield harmful outputs. These evaluations disregard the probabilistic nature of models a
Key takeaways
- arXiv:2604.22167v3 Announce Type: replace-cross Abstract: Language models are increasingly capable and are being rapidly deployed on a population-level scale.
- As a result, the safety of these models is increasingly high-stakes.
- Fortunately, advances in alignment have significantly reduced the likelihood of harmful model outputs.
Why it matters
“Estimating Tail Risks in Language Model Output Distributions” should be evaluated beyond branding and benchmark scores. Its practical importance will emerge in task accuracy, latency, unit cost, safety and integration with real workflows.

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