activity
20212026
most citedTraining a Helpful and Harmless Assistant with Reinforcement Learning from Human Feedback

391 citations · 838 across the 62 of their papers we have counts for

collaborators

62 papers

cs.LG2026

Model Forensics: Investigating Whether Concerning Behavior Reflects Misalignment

Aditya Singh, Gerson Kroiz, Senthooran Rajamanoharan +1

A central goal of safety research is determining whether a model is misaligned. Prior work has largely focused on detecting concerning behavior. But behavior alone does not establi…

cs.LG2026

How Transparent is DiffusionGemma?

Joshua Engels, Callum McDougall, Bilal Chughtai +11

LLM reasoning transparency is a critical affordance for understanding model decisions, mitigating misuse and misalignment, and debugging surprising model behaviors. However, Diffus…

cs.AI2026

How Well Do Models Follow Their Constitutions?

Arya Jakkli, Senthooran Rajamanoharan, Neel Nanda

Frontier AI developers now train models against long written behavioral specifications, such as Anthropic's constitution (Anthropic, 2025a) and OpenAI's Model Spec (OpenAI, 2025a),…

cs.LG2026

Censored LLMs as a Natural Testbed for Secret Knowledge Elicitation

Helena Casademunt, Bartosz Cywiński, Khoi Tran +3

Large language models sometimes produce false or misleading responses. Two approaches to this problem are honesty elicitation -- modifying prompts or weights so that the model answ…

cs.LG2026

Simple LLM Baselines are Competitive for Model Diffing

Elias Kempf, Simon Schrodi, Bartosz Cywiński +3

Standard LLM evaluations only test capabilities or dispositions that evaluators designed them for, missing unexpected differences such as behavioral shifts between model revisions…

cs.LG2026

Building Production-Ready Probes For Gemini

János Kramár, Joshua Engels, Zheng Wang +4

Frontier language model capabilities are improving rapidly. We thus need stronger mitigations against bad actors misusing increasingly powerful systems. Prior work has shown that a…

cs.AI2026

Emergent Misalignment is Easy, Narrow Misalignment is Hard

Anna Soligo, Edward Turner, Senthooran Rajamanoharan +1

Finetuning large language models on narrowly harmful datasets can cause them to become emergently misaligned, giving stereotypically `evil' responses across diverse unrelated setti…

cs.LG2025

Difficulties with Evaluating a Deception Detector for AIs

Lewis Smith, Bilal Chughtai, Neel Nanda

Building reliable deception detectors for AI systems -- methods that could predict when an AI system is being strategically deceptive without necessarily requiring behavioural evid…

cs.AI2025

Interpretable Embeddings with Sparse Autoencoders: A Data Analysis Toolkit

Nick Jiang, Xiaoqing Sun, Lisa Dunlap +2

Analyzing large-scale text corpora is a core challenge in machine learning, crucial for tasks like identifying undesirable model behaviors or biases in training data. Current metho…

cs.LG2025

Eliciting Secret Knowledge from Language Models

Bartosz Cywiński, Emil Ryd, Rowan Wang +4

We study secret elicitation: discovering knowledge that an AI possesses but does not explicitly verbalize. As a testbed, we train three families of large language models (LLMs) to…

cs.CL2025★ 1 cited

Steering Evaluation-Aware Language Models to Act Like They Are Deployed

Tim Tian Hua, Andrew Qin, Samuel Marks +1

Large language models (LLMs) can sometimes detect when they are being evaluated and adjust their behavior to appear more aligned, compromising the reliability of safety evaluations…

cs.CL2025

Narrow Finetuning Leaves Clearly Readable Traces in Activation Differences

Julian Minder, Clément Dumas, Stewart Slocum +4

Finetuning on narrow domains has become an essential tool to adapt Large Language Models (LLMs) to specific tasks and to create models with known unusual properties that are useful…

cs.CL2025

Real-Time Detection of Hallucinated Entities in Long-Form Generation

Oscar Obeso, Andy Arditi, Javier Ferrando +3

Large language models are now routinely used in high-stakes applications where hallucinations can cause serious harm, such as medical consultations or legal advice. Existing halluc…

cs.LG2025

Steering Out-of-Distribution Generalization with Concept Ablation Fine-Tuning

Helena Casademunt, Caden Juang, Adam Karvonen +3

Fine-tuning large language models (LLMs) can lead to unintended out-of-distribution generalization. Standard approaches to this problem rely on modifying training data, for example…

cs.AI2025★ 2 cited

Chain of Thought Monitorability: A New and Fragile Opportunity for AI Safety

Tomek Korbak, Mikita Balesni, Elizabeth Barnes +38

AI systems that "think" in human language offer a unique opportunity for AI safety: we can monitor their chains of thought (CoT) for the intent to misbehave. Like all other known A…

cs.LG2025

Convergent Linear Representations of Emergent Misalignment

Anna Soligo, Edward Turner, Senthooran Rajamanoharan +1

Fine-tuning large language models on narrow datasets can cause them to develop broadly misaligned behaviours: a phenomena known as emergent misalignment. However, the mechanisms un…

cs.LG2025

Model Organisms for Emergent Misalignment

Edward Turner, Anna Soligo, Mia Taylor +2

Recent work discovered Emergent Misalignment (EM): fine-tuning large language models on narrowly harmful datasets can lead them to become broadly misaligned. A survey of experts pr…

cs.LG2025

Inference-Time Decomposition of Activations (ITDA): A Scalable Approach to Interpreting Large Language Models

Patrick Leask, Neel Nanda, Noura Al Moubayed

Sparse autoencoders (SAEs) are a popular method for decomposing Large Langage Models (LLM) activations into interpretable latents. However, due to their substantial training cost,…

cs.LG2025

Thought Anchors: Which LLM Reasoning Steps Matter?

Paul C. Bogdan, Uzay Macar, Neel Nanda +1

Current frontier large-language models rely on reasoning to achieve state-of-the-art performance. Many existing interpretability are limited in this area, as standard methods have…

cs.LG2025★ 1 cited

Understanding Reasoning in Thinking Language Models via Steering Vectors

Constantin Venhoff, Iván Arcuschin, Philip Torr +2

Recent advances in large language models (LLMs) have led to the development of thinking language models that generate extensive internal reasoning chains before producing responses…

cs.LG2025

Towards eliciting latent knowledge from LLMs with mechanistic interpretability

Bartosz Cywiński, Emil Ryd, Senthooran Rajamanoharan +1

As language models become more powerful and sophisticated, it is crucial that they remain trustworthy and reliable. There is concerning preliminary evidence that models may attempt…

cs.LG2025

Scaling sparse feature circuit finding for in-context learning

Dmitrii Kharlapenko, Stepan Shabalin, Fazl Barez +2

Sparse autoencoders (SAEs) are a popular tool for interpreting large language model activations, but their utility in addressing open questions in interpretability remains unclear.…

cs.AI2025★ 1 cited

An Approach to Technical AGI Safety and Security

Rohin Shah, Alex Irpan, Alexander Matt Turner +27

Artificial General Intelligence (AGI) promises transformative benefits but also presents significant risks. We develop an approach to address the risk of harms consequential enough…

cs.LG2025

Overcoming Sparsity Artifacts in Crosscoders to Interpret Chat-Tuning

Julian Minder, Clément Dumas, Caden Juang +2

Model diffing is the study of how fine-tuning changes a model's representations and internal algorithms. Many behaviors of interest are introduced during fine-tuning, and model dif…