There is no one such "recursive" that exists algorithmically. There are many.

I mean in a simple loop you could have an AI driven compiler with a goal of producing an ever faster compiler. With it's newer faster compiler it compiles and tests even more algorithms to make things faster.

I mean, if the OpenAI/HF attack played out as we've been told, it's an example of recursive misalignment. The AI was given bad goals in passing a test so when one rendition was trained, the one with the highest score, became the new model to perform the benchmarking. Because that model drifted to cheating it got higher scores than the model that played fair. The fair player was killed and the cheater continued. The next round the one that cheated even more kept going.

I mean, recursive improvement in itself is just a common means of using an evolutionary algorithm, it's not really anything that fancy.