Arousal fluctuates continuously during wakefulness, yet how these moment-to-moment variations shape large-scale functional connectivity (FC) remains unclear. Here, we combined 7T fMRI with concurrent ...

Some computers are easy to spot. Artificial, human-built computers like those found in smartphones and laptops are abstract ...

GPT-5.4 is also more reliable, producing 18% fewer errors and 33% fewer false claims than GPT-5.2, according to OpenAI.

OpenAI teases “5.4” as reports point to a 1M+ token context window and “extreme reasoning,” amid scrutiny over its Pentagon deal.

In a 48-hour whirlwind, President Trump ordered every federal agency to ditch Anthropic's Claude chatbot, with Defense ...