Based only on raw weights, Astra 6 is able to tell what a model was trained to do and directly edit, without environmental feedback, those model weights to drastically increase performance on various tasks.
RSI probably immediately falls out of these capabilities, and we do not know if OpenAI has RL'd for this.
I don't think this causes strong RSI on its own. The headline result was that Astra 6 fixed Qwen3.5-0.8B's issues with looping text, which improved its math capabilities 6x by (they suggest) letting it actually finish reasoning over math problems. Notably, this required iterating over 50 forward passes, it wasn't weights-only analysis like other tests they performed. The authors further had Astra 6 attempt to improve math capabilities on Gemma 3 270M, a smaller model, but one which doesn't fall prey to looping text the same way, and Astra 6 couldn't improv... (read more)
I would go further and say that this is a lot of bad and not a lot of good, unless this directly leads to some version of "we can explain the model well enough to hand-write a computer program that is functionally nearly identical." I have to imagine that this type of approach will let us reach a strong form of RSI far sooner than it will let us reach that interpretability goal.
While the ability to use this to reduce some features associated with misalignment is nice, if we're ultimately still in the regime of "we can tweak some things to make the model better without actually knowing how the whole thing works," then we still face the issue of suppressing the most visible forms of misalignment while letting the harder to detect ones develop.
1ajskateboarder
Writing weights from symbolic programs (re experiment 5) is also not an entirely novel capability; cf Tracr
It is of course interesting that llms can do this without having defined the spec in some formal language, but this doesn't seem any more unprecedented than recent math results. That llms are soon to be better optimizers than Adam/SGD is speculative