Taking a leave of absence from Open Philanthropy to work on AI safety

I’m planning a leave of absence (aiming for around 3 months and potentially more) from Open Philanthropy, starting on March 8, to explore working directly on AI safety.

I have a few different interventions I might explore. The first I explore will be AI safety standards: documented expectations (enforced via self-regulation at first, and potentially government regulation later) that AI labs won’t build and deploy systems that pose too much risk to the world, as evaluated by a systematic evaluation regime. (More here.) There’s significant interest from some AI labs in self-regulating via safety standards, and I want to see whether I can help with the work ARC and others are doing to hammer out standards that are both protective and practical—to the point where major AI labs are likely to sign on.

During my leave, Alexander Berger will serve as sole CEO of Open Philanthropy (as he did during my parental leave in 2021).

Depending on how things play out, I may end up working directly on AI safety full-time. Open Philanthropy will remain my employer for at least the start of my leave, but I’ll join or start another organization if I go full-time.

The reasons I’m doing this:

First, I’m very concerned about the possibility that transformative AI could be developed soon (possibly even within the decade—I don’t think this is >50% likely, but it seems too likely for my comfort). I want to be as helpful as possible, and I think the way to do this might be via working on AI safety directly rather than grantmaking.

Second, as a general matter, I’ve always aspired to help build multiple organizations rather than running one indefinitely. I think the former is a better fit for my talents and interests.

  • At both organizations I’ve co-founded (GiveWell and Open Philanthropy), I’ve had a goal from day one of helping to build an organization that can be great without me—and then moving on to build something else.

  • I think this went well with GiveWell thanks to Elie Hassenfeld’s leadership. I hope Open Philanthropy can go well under Alexander’s leadership.

  • Trying to get to that point has been a long-term project. Alexander, Cari, Dustin and I have been actively discussing the path to Open Philanthropy running without me since 2018.1 Our mid-2021 promotion of Alexander to co-CEO was a major step in this direction (putting him in charge of more than half of the organization’s employees and giving), and this is another step, which we’ve been discussing and preparing for for over a year (and announced internally at Open Philanthropy on January 20).

I’ve become increasingly excited about various interventions to reduce AI risk, such as working on safety standards. I’m looking forward to experimenting with focusing my energy on AI safety.


  1. This was only a year after Open Philanthropy became a separate organization, but it was several years after Open Philanthropy started as part of GiveWell under the title “GiveWell Labs.”