The Summer 2026 program will run from June through August. It will be largest MATS program to date with 120 fellows and 100 mentors. Fellows will be connected with mentors or organizational research groups, such as Anthropic's Alignment Science team, UK AISI, Redwood Research, ARC, and LawZero, to collaborate on a research project over the summer. Some fellows will be offered a 6+ month extension to continue this collaboration.
Applications are now open. Apply by June 7th.

Key dates for the application and admissions timeline
General Application (May 12th to June 7th)
Applicants fill out a general application to individual tracks which should take 1-2 hours. Applications are due by June 7th EOD AOE.
Additional Evaluations (June 7th to late July)
After an initial evaluation, applicants will apply to individual streams listed below. Additionally, applicants undergo a variety of track specific evaluations including coding tests, writing reviews, work tests, and interviews. Which evaluations you will undergo depend on the tracks, streams and mentors you apply to.
Admissions Decisions (Late July to early August)
Selected applicants are notified of their acceptance and anticipated mentor later in the application cycle.
.png)
The main program takes place from September 28th to December 4th of 2026. It is an intensive research phase, where fellows work full time on a research project in AI alignment, security, field-building, or governance. Fellows' research directions will typically be chosen through a collaborative process with their mentors, and fellows are expected to develop their independent research direction as the program continues.
While mentor support will vary depending on the project and mentors, mentors are expected to spend at least 1 hour/week working with each of their scholars, and some spend much more time. Scholars will also receive support from MATS’s Research Management team, who help to scope out and structure research direction. Depending on which stream you participate in, you may collaborate with other fellows in your stream.
By the middle of the program, fellows will be expected to write a report on their projects’ threat model, theory of change, and project deliverables. At the end of the program scholars will be expected to have a tangible research output. In past cohorts, this has involved presenting at a fellow symposium on work conducted over the course of MATS.
Educational seminars and workshops will be held 2-3 times per week. Previously, speakers have included Buck Shlegeris from Redwood Research, Adam Gleave from FAR AI, Neel Nanda from Google DeepMind, William Saunders from OpenAI, Andrew Critch from CHAI, Lennart Heim from GovAI, Ajeya Cotra from Open Philanthropy, and more.
The extension phase starts in December of 2026, soon after the end of the main program. Fellows who demonstrate promise as independent researchers during the main program can apply for the MATS extension phase. Acceptance into the extension is based on mentor evaluation and MATS review of proposed research.
In recent cohorts, ~80% of fellows who apply have been accepted. The extension phase offers a default additional 6-months of funding, with the ability to later apply for a 6-month continuation.
Extension fellows primarily work from the MATS London or Berkeley offices, with the possibility of working from other AI safety hubs or fully remotely.For accepted extension fellows, MATS arranges funding for stipends and housing ($7,680/month), as well as for compute ($8,000/mo), creating a seamless transition into this advanced phase of the program.
MATS aims to accelerate researchers who will:
MATS alumni have gone on to publish safety research, join alignment organizations, including Anthropic and MIRI, and found an alignment research lab. You can read more about MATS alumni here.
In stage one, you apply to one or more tracks (broad research areas): Empirical, Theory, Strategy & Forecasting, Policy & Governance, System Security, Biosecurity, and Founding & Field-Building. In stage two, advancing applicants choose specific streams within those tracks, each led by one or more mentors with their own research agenda. You can view this list as a grid here.
Additional streams will be added over the course of May.
In this stream we will explore extensions and implications of our discovery that neural networks pretrained on next-token prediction represent belief-state geometry in their activations. We will build on this fundamental theory of neural network representations in order to discover what AI systems are thinking, and understand their emergent behaviors.
Early in the program, Paul and Adam will meet in person with scholars to help them get up to speed on the theoretical and technical background needed to understand and contribute to our framework. Subsequent weekly meetings with mentees aim to answer questions, unblock research, explore project ideas, and give feedback and suggestions on research.
The project can leverage applicants’ strengths in mathematical modeling and/or ML engineering. We welcome highly driven and relatively autonomous researchers that would like to benefit from our mentorship while taking the lead on a relevant project of their choice. The ideal scholar has the ability to move fast, and has experience in either research (e.g., PhD in any field), or software/ML engineering.
We will talk through project ideas with scholar
Peter Henderson’s stream focuses on developing safe, aligned AI agents, with projects on scalable oversight rules informed by law and game theory, safe long-horizon exploration, and measuring “jagged” capability/safety frontiers. Scholars will join an independently driven, engineering-heavy research environment, collaborating with other MATS scholars and PhD students, with weekly 1:1s and active async mentorship.
45 min weekly meetings by default for high-level guidance. I'm active on Slack for quick questions or conceptual (not code) debugging. Expect async back-and-forth on experiment design and results between meetings. Scholars can also schedule ad-hoc calls if they're stuck or want to brainstorm—just ping me on Slack. Other team members (PhD students) will also be around to help brainstorm, getting unstuck.
Essential:
Nice to have, but not necessary:
Not a good fit:
Mentors in the group will pitch projects, and scholars will try ones they find interesting for a week. We'll iterate together at the end of week 1 and pick final assignments in week 2.
The Redwood Research stream is looking for fast empirical iterators and strategists to work on control research.
Depending on the mentor:
We are looking for people who are:
We will assign projects by default but are open to getting pitched on projects.
My MATS fellows will do philosophical thinking about multi-agent intelligence and how agents change their values. This will likely involve trying to explore and synthesize ideas from game theory, signaling theory, reinforcement learning, and other related domains.
I'll come meet scholars in person around 2 days a week on average. On those days I'll be broadly available for discussions and brainstorming. On other days scholars can message me for guidance (though I'd prefer to spend most of my effort on this during the in-person days).
My main criterion for selecting scholars will be clarity of reasoning.
I will talk through project ideas with the scholar.
Roger Grosse’s stream investigates how to improve influence functions and other training data attribution methods, and uses these tools to study alignment-related phenomena such as out-of-context reasoning and emergent misalignment. The ideal scholar has experience with LLM internals, strong statistics/applied math skills (especially numerical linear algebra), and can independently drive research from literature review through experimentation and analysis. Roger provides shovel-ready projects while giving exceptional scholars freedom to pursue their own ideas, and is open to scholars collaborating with others.
I will meet with scholars 1 hour per week by default, and will be available to answer questions on Slack roughly daily.
I will give the scholar the level of freedom they are ready for. I will be prepared with focused, shovel-ready projects, but exceptional scholars with a vision they are excited about will have the flexibility to pursue it.
International coordination to reduce frontier AI risks, with a focus on China and the West.
1 hour weekly meetings by default for high-level guidance. We are active on Slack and typically respond within a day for quick questions.
Good understanding of international AI governance developments that are relevant to frontier AI safety (e.g., the Summit series, AISI network)
Good understanding of Chinese AI governance and safety (key players, key trends and institutional structures)
Good understanding of key frontier risk domains (CBRN, cyber, loss of control)
Some understanding of broader US-China relations and how they frame US-China relations on AI/AGI specifically
We will provide a shortlist of projects that we are keen for the scholar to work on in Week 1. We'll ask scholars to scope these in the 1st week and make a determination about which project to focus on in Week 2.
We build scalable technology for AI understanding and oversight.
You will work closely with a mentor through recurring meetings (group and individual) and Slack.
We're looking for strong, experienced software engineers or talented researchers who can hit the ground running and iterate quickly.
ML experience is a bonus but not required.
We will talk through project ideas with scholar
The stream will focus on conceptual, empirical, and theoretical work on scalable oversight and control. This includes but is not limited to creating model organisms for specific failure modes, designing training procedures against them, and making progress on subproblems involved in safety cases.
A research agenda document will be shared ahead of time with a short list of project ideas. The scholars can also brainstorm and pitch ideas that are aligned with the research agenda. We will decide on assignments in week 2.
MATS Research phase provides scholars with a community of peers.

Scholars work out of a shared office and are supported by the Community Team.
MATS alumni report that the connections with peers that they made during MATS have had the largest impact on them years later. Our full-time Community Team works to facilitate these connections and also provide general well-being support. Weekly lightning talks, scholar-led discussion groups, game nights, and outings to SF are some examples of MATS events.