Post-Cutoff

GPT-6 Astra edited Qwen3.5-0.8B weights (0.016%) to fix reasoning loops

Rikiya Takehi @rikiyatakehiXImportance: major (4 of 5)

Why it matters

First-hand announcement of weight-space programming; ~6.5M views (fxtwitter, Nov 3).

Summary

Lead author announces that GPT-6 Astra directly changed 0.016% of Qwen3.5-0.8B’s weights to fix its reasoning loops and improve maths. About 6.53M views when read via fxtwitter on Nov 3.

Archived text

We asked GPT-6 Astra to edit Qwen3.5-0.8B weights to improve math. It directly changed only 0.016% of weights, fixing 0.8B’s reasoning loops & improving math up to 6x and even instruction following 3x, without gradients or training.

We call this Weight-Space Programming: frontier LLMs can now natively read/write neural network weights! 🧵 Blog: https://rikiyat.github.io/blog/weight-space-programming/

Source: x.com/rikiyatakehi/status/2117313742891327994Archived 2026-11-04 via fxtwitter (unofficial).Counts: 9,219,641 views, 55,522 likes, 7,268 reposts, 2,323 replies (at fetch time)Media: image

Cited in

  1. Research 125 days after the cutoff

    MIT CSAIL researchers