The Autumn 2026 program will run for 10 weeks in Berkeley, CA and London, UK from September 28th to December 4th. Fellows will receive mentorship from world-class researchers and at organizations like Anthropic, Google DeepMind, OpenAI, Redwood Research, and ARC, with the option to apply for a 6–12 month funded extension beyond the main program. For the first time, we are running Founding & Field-Building and Biosecurity tracks.
Applications are now closed.

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.
In stage one, applicants 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.
Junior grantmaking on Coefficient Giving's Technical AI Safety team ($150M+ in grants in 2025). Fellows will co-lead grant investigations, scope new active grantmaking projects (incl. founding new orgs), and help shape the team's strategy and future RFPs.
Active mentorship, similar to a regular manager relationship, with at least one 1-1 per week and async guidance.
You can find a full list of criteria in this document.
In short, we are looking for a combination of:
Fellows will work on a range of projects throughout the fellowship, and will work closely with their mentor to assign and execute on these projects. Fellows will have a comparable amount of freedom as a new grantmaker joining our team does.
I have two broad areas.
Security:
I am interested in building demonstrations for hacking real-world AI deployments to show that they are not secure. The goal is to force companies to invest in alignment techniques that can solve the underlying security issues.
Benchmarks:
I am interested in building benchmarks to determine how generalizable modern LLM techniques actually are, now that we are no longer in the pre-training scaling era.
I will meet 1-1 or as a group, depending on the interests as they relate to the projects. Slack communication outside of the 1-1.
I strongly prefer multiple short meetings over single long meetings, except at the start.
I'll help with research obstacles, including outside of meetings
For security:
You should have a strong security mindset, having demonstrated the willingness to be creative on this. I would like to see past demonstration of willingness to get your hands dirty and try many different systems.
For benchmarks:
As creative as possible, willingness to work on the nitty gritty, willingness to work really hard on problems other people find boring. As interests as far away from SF-related interests as possible.
Mentor(s) will talk through project ideas with scholar
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.
Essential
Preferred
Not a good fit:
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.
Founding ambitious AI safety and field-building projects.
Minimum support = 2x 30-min meetings per week. We could scale this up as appropriate.
I'll be based in SF. If the fellows want to work in BlueDot's office for some periods of time, I could collaborate with them daily.
I'm available for quick calls anytime, and am responsive on Slack.
I'm open to people with a wide range of backgrounds. Though you need to be willing to work very hard, be great at communicating, and have a burning desire to make AI go well.
I work best with people who are intense, communicate and reason clearly, and are mission-driven.
We'll work together to design the project. You'll have a lot of freedom to figure out what the best shape of thing to do is, and I'll provide lots of regular feedback and make relevant introductions to help you refine the proposal.
Your first 1-2 weeks will be focused on figuring out what to do, and the rest of the fellowship will be focused on execution.
This is the empirical research stream of Eleos AI Research. We’re dedicated to understanding and addressing the potential wellbeing and moral status of AI systems. We are open to fellows working on a broad range of topics, including LLM introspection, LLM preferences, persona vectors, and more, using either white-box or black-box interpretability techniques.
By default, we will meet in person for at least an hour per week. We’ll communicate regularly on Slack between meetings, and I will often be able to hop on brief calls on short-notice to discuss time-sensitive, blocking issues.
Essential:
Strong advantages, but not strictly required:
We’ll meet at the start of the program to discuss ideas for projects aligned with Eleos’s research priorities, including any ideas that fellows would like to pitch. We’ll work together to select a project that best fits each fellow’s goals and skills.
This stream offers two broad projects focused on improving current detection efforts at SecureBio. The first is to characterize when AI-bio or general AI tools are actually useful for large-scale metagenomic detection, including tradeoffs between compute cost, sequencing cost, model type, model size, and pipeline stage. The second is to explore genomic language models as novelty detectors—for example, using perplexity-style metrics to flag surprising sequences—and to evaluate whether this approach can complement traditional bioinformatics systems in a cost-effective, sensitive, and interpretable way.
By default, we'll mostly collaborate via a standing weekly meeting (~1 hour), wherein we'll discuss recent progress and next directions. I'm available via Slack for quick back-and-forth on ideas, sanity checks, and unblocking (data access, etc.), but will rely on the fellow to manage their own implementations, code review, debugging, etc.
Essential:
Preferred:
Not a good fit:
I'll determine which of the two broad project ideas we're running with based on SecureBio Detection needs, which fellows match to me, etc. Within that broad project, I'll guide with what I think is helpful / interesting / relevant to SecureBio Detection, and I expect the fellow to have both autonomy and responsibility to pick concrete work directions.
Fourth Eon is developing adaptive, AI-native safeguards across the biotechnology stack, with a focus on function-based DNA synthesis screening. Fellows in this stream will work on technical research projects at the intersection of AI and biosecurity. Projects span topics like mechanistic interpretability of protein foundation models, bio model evaluations for biosecurity-relevant capabilities, and agentic sequence analysis workflows.
I typically schedule a standing weekly 1:1 meeting with each fellow, and also hold a weekly research group meeting. Beyond that I am available on Slack and can find additional time for calls outside of scheduled meetings.
Note that as part of our Safe and Responsible Research Framework we require fellows to sign a fellowship agreement covering confidentiality and pre-publication review for dual-use risks. This is common practice in biosecurity research and allows us to work freely together on sensitive material.
Required:
• Prior technical research experience
• Strong critical thinking and creative problem-solving abilities
• The integrity and judgment to responsibly carry out sensitive research
• A good understanding of the basics of biomolecular sequence, structure, and function
• Expertise in one or more of the following domains:
bioinformatics, computational biology, structural biology, biochemistry, molecular biophysics, protein engineering, biosecurity, AI/ML, or a related field
• Proficiency with Python
Preferred:
• Hands-on experience with testing biological AI models
• Have built model evaluations / benchmarks
• Experience with mechanistic interpretability techniques
• Biosecurity context awareness
Fellows who are interested in our research area should think of potential project ideas that leverage their strengths and interests. I will work with individual fellows to identify a specific project that matches their background and interests and is aligned with our overall research direction, and to refine the scope and objectives of the project.
We are looking for fellows with a significant background in the biological sciences and/or a founder's perspective to work on and support the Bio Action Plan.
We are looking for fellows with a significant background in the biological sciences and expertise in bio security would be a bonus. A knowledge of public health and pandemic preparedness would also be a bonus. An interest in and strong opinions on these things will be very helpful. I'm also looking for a fellow to take a founder's perspective towards building and organization which can be effective at turning a plan into a reality.
A track is a broad research area within MATS. Empirical, Theory, Strategy & Forecasting, Policy & Governance, Systems Security, Founder & Field-Building, and Biosecurity are our current tracks. Each track contains multiple streams. In Stage 1, you apply to tracks.
Streams are organized around a research agenda, led by one or more mentors who guide fellows through related projects. In Stage 2, applicants apply to streams within tracks based on research that interests them.
You may apply to as many tracks as you wish at Stage 1. At Stage 2, depending on which tracks you progress in, you may then apply to as many streams as you wish within those tracks; there is no cap. The process is comparable to applying to PhD supervisors.
We want to be flexible for applicants who have urgent prior commitments. Based on individual circumstances, we may be willing to alter the time commitment of the program and allow fellows to leave early or arrive late. Please inform us of your availability in the application process.
Applicants who will be 18 years or older before the program start date are eligible to apply. Both US and non-US citizens are eligible to apply. All backgrounds and levels of experience are welcome and prior AI safety experience is not required.
Yes. The 12-week program requires fellows to commit 40 hours per week to their MATS research. For exceptionally strong candidates with significant concurrent responsibilities, the time commitment can be reduced to 20 hours per week on a case-by-case review. However, the program maintains an expectation of sustained, high-level engagement, including regular participation in core activities and most organized events. Candidates that require a J1 visa to come to the US are unable to participate part time; they can only work part time if they participate remotely or from the UK.
Yes, upon submitting you will receive a link that lets you edit your response. Please note that you will not be able to edit your response once the application period ends.
LLMs may not be used to write any part of your application unless specific work tests or forms explicitly permit it. MATS monitors for LLM use, and applicants found to have used LLMs may be disqualified.
Depending on the evaluations of the tracks and streams you apply to in Stages 1 and 2, we will contact your references. We will send them a form with our own set of questions, so they will not have to prepare a reference letter.
Although MATS sometimes supports UC Berkeley-based mentors, MATS is an independent program and is not formally part of UC Berkeley. As such, MATS will not be providing student cards to our scholars.
The main program, or Research Phase, takes place in person in Berkeley, CA and London, UK. Historically, most fellows participate from Berkeley. London is typically chosen by fellows who want to co-locate with their mentor or who have a preference to work from the UK instead of US.Will this program be remote or in-person?
The main program, or the Research Phase takes place in Berkeley, CA and London, UK, with the majority of fellows participating from Berkeley. We strongly encourage in-person participation when possible, as a core part of the program experience comes from day-to-day interactions with your cohort and others in the broader AI safety ecosystem.
Decisions about remote participation are made on a case-by-case basis and depend primarily on mentor preferences, many of whom are open to the possibility, especially if you have family or other obligations that make in-person participation difficult. We strongly encourage in-person participation when possible, as a core part of the program experience comes from day-to-day interactions with your cohort and others in the broader AI safety ecosystem.
If you have difficulties in securing a visa to participate from Berkeley, we are likely to be able to support participation from our London office.The 6–12 month extension gives fellows the option to participate from Berkeley, London, or remotely.
MATS is a scientific and educational seminar and independent research program, and provides J1 visas for non-American participants. Participants can also opt to participate from our London office; however, please note that visa support is not available for that option.
During the main program, fellows should expect to meet with their mentor for at least one hour per week, with more frequent communication via Slack. The extent of mentor support will vary depending on the project and the mentor.
Fellows will also receive support from MATS’ Research Management team, who work with mentors by tracking scholar research progress, unblocking scholar research, and assisting with grant applications and deadlines.
Fellows develop as researchers by working with an experienced research mentor, interacting with other fellows, and receiving support from our Research Management team. Research managers meet weekly with most fellows and mentors and help with research strategy, research unblocking, and project coordination.
Other forms of training include workshops on different parts of the research process and seminars on a variety of AI technical safety and governance research.
Throughout the program, each fellow will work on an independent research project with input and guidance from your mentor(s). Depending on which stream you participate in, you may collaborate with other fellows in your stream.
Traditionally, fellows submit a Research Plan midway through the program and present their research at the Fellow Symposium at the end of the program.
We welcome feedback. For feedback for the whole team (visible by all MATS staff), please use this form. For feedback that will only be visible to the Co-Executive Directors, Ryan and Christian, please submit here.
You can contact the MATS Board of Directors using this linked form (responses are only viewable by the Board). Please only use this if you feel your question or concern requires board-level attention.