Analysis: recent open weight models lag frontier closed models' cyber capabilities by 4 to 7 months, a narrower gap than the 6 to 10 months through most of 2025 (AI Security Institute)

AI Security Institute: Analysis: recent open weight models lag frontier closed models' cyber capabilities by 4 to 7 months, a narrower gap than the 6 to 10 months through most of 2025 — AISI has tracked the cyber capabilities of frontier AI models since 2023. On our evaluations, the most capable models …