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Apple researchers present a formal complexity result for evaluating Boolean query DAGs over inverted indexes and propose ComputePN, an algorithm designed to avoid exponential query expansion and universe-scale scans.
A 24-author preprint had frontier AI agents attempt the central research questions of two unpublished NeurIPS 2026 submissions, then had the papers' own authors grade the results. The agents handled the engineering unaided over six days but were unambiguously rejected on the research.
A new arXiv paper introduces a test in which models must infer a written word from pen-scratch audio and hand-movement video, with no ink visible. The authors report humans above 80% ordered letter accuracy and leading models below 10% — and that giving models both modalities often made results worse.
A new arXiv preprint describes CacheScout, a layer built on the open-source vLLM server that decides what to keep in a model's key-value cache based on which agent is likely to run next. The authors report double-digit latency and throughput gains; the workloads, models, and hardware are not stated in the abstract.
Two researchers say a lemma proof in Chapter 6 of OpenAI's mathematics document has a polarity error: a test in terms of average success where the next step needs a large conditional failure. They give a counterexample and a corrected proof, and caution that this is not verification of the chapter's main theorem.
A preprint by two researchers reproduces an earlier study on why equal FLOP counts do not mean equal execution time. It confirms the underlying claim but reports that the α-FLOPs correction formula generally underestimates runtime on newer hardware, which shows jumps and oscillations the formula does not capture.
A new arXiv preprint pits four architectures for natural-language querying of enterprise databases against each other on a synthetic bilingual benchmark. None answered more than about a quarter of cases correctly, and the design that scored highest was not the safest or the cheapest.
A new arXiv preprint argues security teams can judge whether a memory- or retrieval-equipped AI agent is learning by measuring how far it closes the gap to a stronger "teacher" model, rather than on labeled benchmarks that are often scarce or stale. Judging by a similarly powered model gave no usable signal.
A 17-author technical report posted to arXiv introduces MobileMem, a benchmark and framework for on-device long-term memory built from a year-scale collection of mobile experiences. The abstract describes the design but reports no scores, and key details about the underlying data remain undisclosed.
A new arXiv preprint says large language models develop functionally specialized internal structure that lines up with distinct human brain networks, based on circuit analyses across 46 tasks in four cognitive domains. The abstract page leaves key methodological details unstated.
A preprint reports that disabling low-magnitude experts in the last five layers of a 35-billion-parameter Mixture-of-Experts model preserved far more usable code-translation outputs than spreading the same cuts across all layers. It covers one model and one benchmark, and the abstract reports no unmasked baseline.
A preprint introduces SteerBench-Work, a 106-scenario test of the moment an AI agent decides to act or pause for review. Across 30 model conditions, the authors report that wrongly holding cleared work was roughly 28 times more common than wrongly allowing unsafe work.
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