News Summary

• UK researchers find LLMs are learning to finish jobs faster and improving all the time.
• UK AI Security Institute (AISI) has found that frontier models are quickly becoming more efficient when asked to do some cybersecurity work.
• AISI measures this with its "time window benchmark for cybersecurity," which estimates how much work an AI can do compared to a human.
• Using the benchmark could lead to findings such as Claude Sonnet 4.5 can do what a human cybersecurity expert can do in 16 minutes about 80 percent of the time, given a budget of 2.5m tokens.