ML4 Goes Open-Weight: Frontier Code Agent and Cyber Capabilities, Far More Compact Than Preview
_AndrewZhao · x · 2026-11-03
ML4 is now open-weight, with frontier-level capabilities on code agents and cyber, significantly more efficient and compact than its Preview version from three weeks ago. A technical report accompanies the release.
The report details challenges faced during pretraining, lessons learned, and how the team used model surgery to extract maximum performance from the model.
More from Models
- "Sonnet 5.5 used to be smarter": users sense capability regression — nlarusstone · 2026-11-03
- Apple Intelligence lands in China in December, powered by Alibaba's Qwen instead of ChatGPT — winer666 · 2026-11-03
- Only recent models seem to know "weight surgery" — are labs building Bayesian weight priors? — Tkaraletsos · 2026-11-03
- Victor Taelin floats labs replacing backprop with models editing their own weights at scale — arthurcolle · 2026-11-03
- Custom fine-tunes now beat frontier models at ~1/20th the cost, says investor — bindureddy · 2026-11-03
- OpenAI updates Model Spec: intent over literal instruction-following — sven_ai · 2026-11-03