collaborators

5 papers

cs.AI2026

Agent in a Bottle: Can LLM Agents Turn Their Capabilities Into Cheap, Scalable Artifacts?

Ankit Sonthalia, Haritz Puerto, Alexander Rubinstein +2

Large language models (LLMs) can solve many narrow tasks, but querying them separately for millions of related instances can be prohibitively expensive. Can LLM agents autonomously…

cs.CL2026

MuPPET: A Benchmark for Contextual Privacy of LLM Assistants in Multi-Party Conversations

Elena Sofia Ruzzetti, Cornelius Emde, Sangdoo Yun +2

LLM agents are increasingly deployed in multi-party environments, handling sensitive personal data on behalf of individual users, for instance in group chats. When such an agent di…

cs.AI2026

MASEval: Extending Multi-Agent Evaluation from Models to Systems

Cornelius Emde, Alexander Rubinstein, Anmol Goel +4

The rapid adoption of LLM-based agentic systems has produced a rich ecosystem of frameworks (smolagents, LangGraph, AutoGen, CAMEL, LlamaIndex, i.a.). Yet existing benchmarks are m…

cs.CL2026

Privacy Collapse: Benign Fine-Tuning Can Break Contextual Privacy in Language Models

Anmol Goel, Cornelius Emde, Sangdoo Yun +2

We identify a novel phenomenon in language models: benign fine-tuning of frontier models can lead to privacy collapse. We find that diverse, subtle patterns in training data can de…

cs.CL2025

Is Multilingual LLM Watermarking Truly Multilingual? Scaling Robustness to 100+ Languages via Back-Translation

Asim Mohamed, Martin Gubri

Multilingual watermarking aims to make large language model (LLM) outputs traceable across languages, yet current methods still fall short. Despite claims of cross-lingual robustne…