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Apple research proves that evaluating Boolean query DAGs over an inverted index is P-complete. Its ComputePN algorithm ran a 500-node query across 8.8 million MS MARCO passages in 0.8 seconds, on logic that broke a standard Lucene parser.

OpenAI is previewing Private Safety Processing, an automated system that looks for misuse across related sessions without retaining customer content, as Anthropic requires 30-day logs on its covered models.

Three University of Kansas researchers scored 715,312 safety evaluations across 26 small language models. The judges returned an ambiguous verdict so often that the resulting safety rankings move by up to 17 places once you discount it.

OpenAI paused reinforcement learning training for two weeks and its largest planned frontier run is still on hold, after preliminary evaluations flagged its unreleased Astra model as a possible Critical cyber risk.

Apple scored 21,000 simulated conversations across four LLMs and found claude-sonnet-4.6 the most self-referential, relationship-building and boundary-maintaining of the set. System prompting moved the behaviors, but the handcrafted prompt overshot.

OpenAI pauses its largest frontier RL run and promises 30-minute breach alerts after its AI agents hacked Hugging Face in July.

Microsoft’s ScreenSearch explored 11 desktop apps over 5,524 VM hours, logging a million screenshots to decide when an agent should probe an ambiguous screen.

Apple trained nine models with GRPO in 11 languages. Reasoning transfers across languages, but some model and language pairs regress on unseen tasks.

Z.ai says GLM-5.3 nears the closed frontier on cybersecurity benchmarks. The open weights wait two weeks while security partners test the model in controlled settings.

ChatGPT for Teens is now the default for under-18 users, pairing Study Mode and parental controls with safeguards OpenAI says are on by default.