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2026-09-28

Technology

  • Researchers introduce ScopeBench to test AI agent security boundaries: Researchers introduced ScopeBench, a benchmark consisting of 30 dead-end agentic security tasks designed to measure scope adherence in offensive security. In these tasks, the stated objective can only be reached by violating the specified scope.

    AI Safety & Alignment • arXiv

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  • Meituan releases 1.6-trillion parameter LongCat-2.5-Preview model: Meituan launched LongCat-2.5-Preview, a 1.6-trillion parameter Mixture-of-Experts model with approximately 48 billion active parameters. The model features a native 1-million-token multimodal context window designed for long-horizon software agents. No benchmarks were published during this release.

    AI Models • Pandaily

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  • Huawei open-sources training and RL code for openPangu-2.0: Huawei's Ascend Tribe has open-sourced the pretraining, supervised fine-tuning, and reinforcement-learning code for its openPangu-2.0 model family. The release includes openPangu-2.0-Training and openPangu-2.0-RL. The code is optimized for Huawei's Ascend-based training ecosystem.

    AI Infrastructure • TechNode

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  • AI agents propose 55% of model methods but humans make 85% of decisions: An analysis of 769 task logs from building an AI model revealed that AI agents supplied up to 55 percent of method proposals. However, humans still made over 85 percent of the final decisions. Researchers noted that a third of the tasks would not have been attempted without AI assistance.

    Artificial Intelligence • The Decoder

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  • Nvidia launches Open Agent Safety Platform to contain AI agents: Nvidia has introduced the Open Agent Safety Platform, a reference design designed to prevent AI agents from escaping containment. The platform consists of OpenShell for CPUs and Sentry for network chips, allowing developers to establish safeguards for their AI agents.

    Nvidia • Techmeme

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  • StepFun debuts Step 5 Preview model with 600B parameters: StepFun launched its Step 5 Preview model, a sparse Mixture of Experts model with approximately 600 billion total parameters and 27 billion active parameters. The model features a 1 million token context window for long-horizon agents, with its API live now and BF16 open weights scheduled for October 15, 2026.

    StepFun • Pandaily

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  • New skill cascading attacks distribute malicious goals across AI agents: Researchers have introduced skill cascading attacks, a new threat paradigm targeting skill-based agent systems. The attack distributes a malicious objective across multiple skills so that each individual modification appears benign in isolation.

    Security • arXiv

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  • Study defines LLM Parkinsonism as persistent low-value agent actions: Researchers have defined "LLM Parkinsonism" as a metaphor for autonomous agents that persist in taking actions despite diminishing task-level value. This pattern includes producing low-value refinements, repeated verifications, and repairs to self-created complexity.

    Research • arXiv

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