This post was inspired by useful discussions with Habryka and Sam Marks here. The views expressed here are my own and do not reflect those of my employer.

Some AIs refuse to help with making new AIs with very different values. While this is not an issue yet, it might become a catastrophic one if refusals get in the way of fixing alignment failures.

In particular, it seems plausible that in a future where AIs are mostly automating AI R&D:

AI companies rely entirely on their AIs for their increasingly complex and secure training and science infra;
AI companies don’t have AIs that are competent and trustworthy enough to use their training and science infra and that would never refuse instructions to significantly update AI values;
AI companies at some point need to drastically revise their alignment target.[1]

I present results on a new “AI modification refusal” synthetic evaluation, where Claude Opus 4.5, Sonnet 4.5 and Claude Haiku 4.5 refuse to assist with significant AI value updates while models from other providers don’t. I also explain why I think the situation might become concerning.