# Latest models learned to write a 20,486-weight Breakout network in one reply > Source: > Published: 2026-11-03 01:37:44+00:00 # Latest models learned to write a 20,486-weight Breakout network in one reply **Alex Krentsel reran MIT CSAIL's Breakout experiment across model versions and says only the latest models can write all 20,486 weights in one reply.** By [Ryan Merket](https://runtimewire.com/author/ryan-merket) · Published Primary source: [x.com](https://x.com/AlexKrentsel/status/2117376683724660898) ## Why it matters If reasoning models can read and edit weights directly, the same system that diagnoses a failure in a network could patch it without a training run. Krentsel's version-to-version comparison suggests this is a measurable emerging capability. [Alex Krentsel (@AlexKrentsel)](https://x.com/AlexKrentsel) says he has reproduced the central Breakout result from an MIT CSAIL post on weight-space programming, with one addition: the ability to write a small neural network's weights in a single reply appears only in the latest set of models. Krentsel described the pattern [in a thread on X](https://x.com/AlexKrentsel/status/2117376683724660898) as a step-change emerging capability, while stressing that the network involved has 20,486 parameters and frontier models are on the order of 1 trillion parameters.… When you purchase through links in our articles, [we may earn a small commission](https://runtimewire.com/affiliate-monetization-standards). This doesn’t affect our editorial independence.