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Charles London

PhD student, Department of Computer Science, University of Oxford

2 papers at NeurIPS 2025

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Poster Session 2

Wednesday, December 3, 2025 · 4:30 PM → 7:30 PM

Exhibit Hall C,D,E

REAL: Benchmarking Autonomous Agents on Deterministic Simulations of Real Websites

#3602 · Divyansh Garg, Diego Caples, Andis Draguns, Nikil Ravi, Pranav Putta, Naman Garg, Prannay Hebbar, Youngchul Joo, Jindong Gu, Charles London, Christian Schroeder de Witt, Sumeet Ramesh Motwani

Ultra-realistic benchmark environments and evaluation framework for web agents

Poster Session 6

Friday, December 5, 2025 · 4:30 PM → 7:30 PM

Exhibit Hall C,D,E

Pause Tokens Strictly Increase the Expressivity of Constant-Depth Transformers

#5107 · Charles London, Varun Kanade

We provide the first proof showing that pause tokens (such as "...") appended to the input of a Transformer can strictly increase its expressivity.