Models

Anthropic reported on September 29 that Z.ai’s open-weight GLM-5.3 model could build working browser exploits and that researchers could substantially weaken its refusal safeguards. The finding concerns a model that anyone can download, modify and run. Anthropic’s Frontier Red Team tested whether GLM-5.3 could turn known software defects into working attacks and whether it would follow explicitly harmful instructions after common safeguard-bypass techniques. Anthropic researchers Andrew Fasano, Marius Fleischer, Cole McFaul, Robert Xiao and Tripp Gallagher authored the report. The team ran models in isolated environments and combined automated benchmarks with sessions in which security researchers directed the model while examining unfamiliar software targets. ...

OpenAI released GPT-6.1 Sol on September 29, pricing the model at $2 per million input tokens and $10 per million output tokens through its API. The company positions the model between its existing GPT-6 Sol and flagship GPT-6 Astra. OpenAI says the new version approaches Astra on coding, computer-use and professional-work evaluations while charging one-fifth of Astra’s standard input and output prices. Why it matters: Developers running agents repeatedly pay for long prompts, tool results and generated output. A lower price at near-flagship capability can change which model they leave active for routine work and which tasks still justify Astra. ...