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
Applications typically open several months before the program begins. Applicants complete a multi-stage admissions process, beginning with a general application. Depending on the tracks, streams, and mentors they apply to, applicants may also complete additional evaluations such as interviews, work tests, coding assessments, or writing samples before final admissions decisions are made.
The main program is a 10 to 12 week full-time research fellowship. Fellows work closely with one or more mentors on independent research projects while participating in workshops, talks, office hours, and the broader MATS community. Research directions are developed collaboratively with mentors, with increasing independence throughout the program.
The extension phase typically begins approximately two weeks after the main program concludes. Fellows who demonstrate strong research potential during the main program may apply for a funded 6 to 12 month extension. Extension fellows continue developing independent research with ongoing mentorship and support, typically working from MATS offices or other approved research locations. In recent cohorts, roughly 80% of fellows who applied to the extension phase were accepted.
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.
Each MATS stream brings together scholars and mentors around a shared research agenda. Streams vary in methodology and focus area, spanning topics such as interpretability, control, evaluations, governance, cybersecurity, and agent foundations.
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.
I (Cas) work on a range of projects from technical safeguards to technical governance. This stream follows an academic collaboration model and will work will likely focus on technical topics in AI governance.
2-3 meetings per week plus regular messaging and collaborative writing.
Green flags include:
Mentor(s) will talk through project ideas with scholar.
In the shard theory stream, we create qualitatively new methods and fields of inquiry, from steering vectors to gradient routing to unsupervised capability elicitation to robust unlearning. If you're theory-minded, maybe you'll help us formalize shard theory itself.
We will have weekly 1-1's and weekly team lunch, as well as asynchronous communication over Slack. Mentees are always welcome to reach out at any time, in case guidance is needed outside of usual meeting times.
Scholars should mostly figure things out on their own outside of meetings
Ideal candidates would have:
Mentor(s) will talk through project ideas with scholar
This stream is for the UK AISI Red-team. The team focuses on stress-testing mitigations for AI risk, including misuse safeguards, control techniques and model alignment red-teaming. We plan to work on projects building and improving methods for performing these kinds of evaluations and methods.
Each scholar will have one primary mentor from the Red Team who will provide weekly guidance and day-to-day support
Scholars will also have access to secondary advisors within their specific sub-team (misuse, alignment, or control) for technical deep-dives
Team lead Xander Davies and advisors Geoffrey Irving and Yarin Gal will provide periodic feedback through team meetings and project reviews
For scholars working on cross-cutting projects, we can arrange mentorship from multiple sub-teams as needed
Structure:
Weekly 1:1 meetings (60 minutes) with primary mentor for project updates, technical guidance, and problem-solving
Asynchronous communication via Slack/email throughout the week for quick questions and feedback
Bi-weekly team meetings where scholars can present work-in-progress and get broader team input
Working style:
We expect scholars to work semi-independently – taking initiative on their research direction while leveraging mentors for guidance on technical challenges, research strategy, and navigating AISI resources
Scholars will have access to our compute resources and operational support to focus on research
We encourage scholars to document their work and, if appropriate, aim for publication or public blog posts
We're looking for scholars with hands-on experience in machine learning and AI security, particularly those interested in adversarial robustness, red teaming, or AI safeguards. Ideal candidates would have:
We welcome scholars at various career stages especially those who are eager to work on problems with direct impact on how frontier AI is governed and deployed.
Scholars will choose from a set of predefined project directions aligned with our current research priorities, such as:
We'll provide initial direction and guidance on project scoping, then scholars will have autonomy to explore specific approaches within that framework.
Expect weekly touchpoints to ensure progress and refine directions.
If mentees have particular ideas they're excited about that they see as fitting within the scope of the team's work, they're welcome to propose them, but there is no guarantee they will be selected
Conceptual research on deceptive alignment, designing scheming propensity evaluations and honeypots. The stream will run in person in London, with scholars working together in team(s).
During the program, we will meet once a week to go through any updates / results, and your plans for the next week. I'm also happy to comment on docs, respond on Slack, or have additional ad hoc meetings as needed.
I will talk through project ideas with scholars
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.