Streams in this track include hands-on research using machine- learning experiments to understand and improve model safety including AI control, interpretability, scalable oversight, evaluations, red-teaming, and robustness. This track is defined by its methods rather than any single research agenda. If your primary tool is ML engineering, this is the track for you.
The track is defined by its methodology more than by any single research agenda. Fellows run ML experiments to understand and improve the safety properties of frontier models, with work spanning interpretability, AI control, scalable oversight, evaluations, red-teaming, robustness, and model organisms of misalignment. The unifying thread is that progress comes from hands-on work with real models (training, probing, fine-tuning, measuring, etc.) rather than reasoning from first principles alone. This is the largest track in the program and the most common entry point into technical AI safety research.
We are looking for fellows whose primary tool is ML engineering, broadly construed. The essential requirement is the ability to design and run experiments on language models or other deep learning systems and iterate quickly on the results. In practice, that usually means having a solid understanding of Python (with and without AI coding tools), being comfortable with the infrastructure around running models at moderate scale, and knowing which experiments are worth running. Mission alignment is highly important, and fellows should be able to say why a given line of empirical work meaningfully reduces frontier risk, not just whether it yields a successful publication. Educational background and seniority are weighted lightly here relative to other tracks. Past cohorts have included strong fellows ranging from undergraduates to senior industry researchers.
Fellows are matched to mentors based on fit, and projects are scoped to produce concrete artifacts (i.e., papers, evaluation suites, open-source tooling, or technical reports) by the end of the program. The target audiences for the work produced in this track would include safety and alignment teams at frontier labs, governments and other evaluation organizations, and the broader ML research community.
If you are excited by this kind of work, we encourage you to apply.
We are excited to supervise projects:
1. Study the causes and implications of situational awareness, and the role that meta-cognition plays in (multi-agent) alignment;
2. Contribute to LawZero's Scientist AI, in the form of contextualization and uncertainty estimation.
Essential knowledge:
Essential experience:
Desired experience:
Bonus:
Lee's stream will focus primarily on improving mechanistic interpretability methods for reverse-engineering neural networks.
Mentorship looks like a 1 h weekly meeting by default with approximately daily slack messages in between. Usually these meetings are just for updates about how the project is going, where I’ll provide some input and steering if necessary and desired. If there are urgent bottlenecks I’m more than happy to meet in between the weekly interval or respond on slack in (almost always) less than 24h. We'll often run daily standup meetings if timezones permit, but these are optional.
In general I'd like projects in my stream to at least be conceptually informed by parameter decomposition, manifolds, and minimum description length framings of interpretability, if not build on them directly.
Scholars and I will discuss projects and come to a consensus on what feels like a good direction. I will not tell scholars to work on a particular direction, since, in my experience, intrinsic motivation to work on a particular direction is important for producing good research.
The stream focuses on evaluating and/or mitigating catastrophic risk emerging from dangerous scientific capabilities in frontier AI systems, with an emphasis on the challenges that emerge from lab integrations and novel science. Potential research directions include evaluation design, risk mitigations and evaluation science.
We can schedule a weekly 1h meeting, for general progress updates, sharing results, and overall guidance. I would be reachable on Slack as well for async comms. Happy to jump on ad-hoc calls for specific discussions or pair coding/debugging. I am based in London and I work UK hours (10am-7pm), but I also visit the US (Boston) a few times a year.
I will work with the fellow to find the right project that suits their interest within the directions spelled out above. I will pitch a few project ideas and support the fellow in making the decision. I also welcome project suggestions; in those cases I would work with the fellow to scope it appropriately.
This stream focuses on critical challenges in AI safety and alignment, including risks from automating AI research, bottlenecks to recursive self-improvement, and the automation of safety and alignment research. Priority topics also include AGI privacy, measuring long-horizon agentic capabilities, developing new alignment methods, and advancing the science of post-training.
I usually spend at least 30 min per week in one-on-one meetings with my mentees. We can also discuss longer time slots if necessary. Besides these time slots, I try to be as responsive as possible over Slack (>2 comprehensive responses per day) and read relevant papers between weekly meetings.
I would prefer to set the overall direction, but I will listen closely to scholars about their preferences within a broad direction. Converging on a particular topic is expected to be a collaborative process.
This stream focuses on understanding model character in language model training dynamics, addressing questions around character reliability, scaled RL’s effects on character training, and how model character interacts with capabilities training. We plan on building a training-focused workstream to answer these questions, with a goal of building out the early, foundational research area on character training across ML, NLP, and safety fields.
Candidates should know the basics of LLMs and ML engineering, have strong communication skills, present very high motivation, demonstrate strong abilities in any field, have experience working with LLM agents to run some sort of experiment, and used some form of GPU environments / fine-tuning products before.
Neel takes a pragmatic approach to interpretability: identify what stands between where we are now and where we want to be by AGI, and then focus on the subset of resulting research problems that can be tractably studied on today's models. This can look like diving deep into the internals of the model, or simpler black box methods like reading and carefully intervening on the chain of thought - whatever is the right tool for the job. This could look like studying how to detect deception, understanding why a model took a seemingly concerning action, or fixing weak points in other areas of safety, e.g. using interpretability to stop models realising they are being tested. You can learn more about Neel's approach in this podcast.
He has spent far too much time having MATS scholars, and has worked with ~60 so far - he’s excited to take on even more!
This stream focuses on empirical projects that improve our ability to evaluate model capabilities or enable us to understand or evaluate model monitorability. An ideal project culminates in a research output (conference/Arxiv paper or research blogpost with artifacts).
Mentor availability: I don’t expect to allocate more than 5 hours on any week to mentorship.
Meetings: I expect to have project meetings weekly for about an hour where we chat about your results from last week, the planned next steps, any blockers or uncertainties. We'll have a monthly overall project check-in about broader progress towards overall goals.
Help outside of meetings: I am available to provide some help most weeks outside of the meeting, but by and large I expect mentees to be self-directed and self-sufficient in solving problems.
An ideal fellow has a strong AI research (software engineering is a plus) background. It's important that they are self-motivated and can make weekly progress with little intervention. If you are interested in working on non-concretely scoped projects, I would expect mentees to have the ability to write well-scoped project proposals, with realistic planned milestones and deliverables. Evidence of successful projects here would be very helpful in evaluating this. A fellow can be a PhD student and they can work on a paper that will be part of their thesis.
I will talk through project ideas with the scholar
Computational/modelling problems in biosecurity.
Typically 1 hour weekly meetings by default. I typically respond on slack quite quickly - some weeks I am not available. You are welcome to chat to my phd students too!
Computational experience e.g. Python OR statistical modelling interest in biosecurity
We will construct a project together that best suits the skills and interests of the fellow and what I can reasonably be helpful for.
The MATS Program is a 10-week research fellowship designed to train and support emerging researchers working on AI alignment, transparency and security. Fellows collaborate with world-class mentors, receive dedicated research management support, and join a vibrant community in Berkeley focused on advancing safe and reliable AI. The program provides the structure, resources, and mentorship needed to produce impactful research and launch long-term careers in AI safety.
MATS mentors are leading researchers from a broad range of AI safety, alignment, governance, field-building and security domains. They include academics, industry researchers, and independent experts who guide scholars through research projects, provide feedback, and help shape each scholar’s growth as a researcher. The mentors represent expertise in areas such as:
Key dates
Application:
The main program will then run from September 28th to December 4th, with the extension phase for accepted fellows beginning in December.
MATS accepts applicants from diverse academic and professional backgrounds - from machine learning, mathematics, and computer science to policy, economics, physics, cognitive science, biology, and public health, as well as founders, operators, and field-builders without traditional research backgrounds. The primary requirements are strong motivation to contribute to AI safety and evidence of technical aptitude, research potential, or relevant operational experience. Prior AI safety experience is helpful but not required.
Applicants submit a general application, applying to various tracks (Empirical, Theory, Strategy & Forecasting, Policy & Governance, Systems Security, Biosecurity, Founding & Field-Building.
In stage 2, applicants apply to streams within those tracks as well as completing track specific evaluations.
After a centralized review period, applicants who are advanced will then undergo additional evaluations depending on the preferences of the streams they've applied to before doing final interviews and receiving offers.
For more information on how to get into MATS, please look at this page.