MATS Summer 2025

The Summer 2025 cohort supported 98 fellows with 57 mentors over a 10-week research phase running from June through August 2025. The program received applications from 115 prospective mentors, reflecting continued strong interest from the AI safety research community in mentoring emerging researchers. Research work spanned AI alignment, transparency, and security, with fellows conducting projects across the established five-track structure. The cohort concluded with a Program Symposium on August 22nd featuring 10 spotlight talks and a poster session showcasing all fellow projects.

Applications are now closed.

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Program phases

Key dates for the application and admissions timeline

1. Applications

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.

2. Main Program
3. Extension Phase
4. Post-program

Application

What is a track?
What is a stream?
How many streams and tracks can I apply to?
Are the key dates flexible?
Who is eligible to apply?
Is this program a full-time commitment?
Can I update my application after submitting?
What is the policy on LLM usage?
What should I know about references?

MATS Program

Is MATS officially affiliated with UC Berkeley? Will I get a student card?
Where does the program take place?
Can I participate remotely?
Can I join the program from outside the US?
What should I expect from my mentor?
What training will the program offer?
What are the main deliverables of the research program?
How can I share feedback with the MATS team?