Grok 4 Heavy excelled in contextual retrieval. A hidden password embedded in the first three-quarters of a Harry Potter book was located in just 15 seconds. When the planted password was removed, the ...

With safer design, more robust reasoning, expanded developer tooling, and broad user access, GPT-5 reflects a maturing AI ecosystem.

The event-triggered predefined-time output feedback control problem is considered for fractional-order nonlinear systems (FONSs) with input saturation. The controlled plant contains unknown nonlinear ...