Safety & alignment
media AI News (smol.ai) · 4d ago

GLM-5.2 Emerges as Leading Open-Weight Coding Model

GLM-5.2 is widely regarded as the first open-weight coding model that rivals frontier models like Opus 4.8 and GPT-5.5 in capability. Practitioners highlight its strong tool use, long-horizon planning, and autonomous subagent behavior, with consensus that it now credibly operates in the frontier SWE range. The model's emergence underscores growing value of open weights for provider competition, on-prem deployment, and reduced vendor lock-in.

arxiv arXiv cs.AI · 6d ago

Sovereign Execution Broker for Certificate-Bound Agentic Control

The Sovereign Execution Broker (SEB) introduces a runtime enforcement boundary that verifies and executes certified authority in agentic systems. It validates execution contracts, checks validity periods, and ensures policy compliance before invoking infrastructure APIs, providing a short-lived, auditable, and revocable execution capability. The prototype was evaluated on AWS and Kubernetes, measuring latency, revocation propagation, and fault injection resistance.

arxiv arXiv cs.LG · 6d ago

Lightweight Defense Against False Data Injection in Power Grids

A new defense framework enhances deep neural networks' resilience to false data injection attacks in power grids by adding a padding layer with pseudofeatures derived from input statistical distributions. This lightweight, model-agnostic approach increases input dimensionality in a randomized, data-aware way, making adversarial perturbations non-transferable and unpredictable, thus effectively countering attacks without performance degradation.

arxiv arXiv cs.LG · 6d ago

Riemannian Sharpness Explains SGD's Bias Toward Flat Minima

This study introduces Riemannian sharpness, a reparametrization-invariant measure of flatness grounded in Fisher Information Matrix geometry. It proves SGD's stationary distribution concentrates at Riemannian-flat minima and links this geometric bias to generalization via a PAC-Bayes bound. Experiments on MNIST and CIFAR-10 show Riemannian sharpness better tracks generalization than Euclidean sharpness, with scaling consistent with theory.