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)

<a href="https://www.aisi.gov.uk/blog/how-far-behind-the-frontier-are-leading-open-weight-models-on-cyber"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260718/i9.jpg" vspace="4" /></a> <p><a href="https://www.techmeme.com/260718/p9#a260718p9" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> <a href="https://www.aisi.gov.uk/">AI Security Institute</a>:<br /> <span style="font-size: 1.3em;"><b><a href="https://www.aisi.gov.uk/blog/how-far-behind-the-frontier-are-leading-open-weight-models-on-cyber">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</a></b></span>&nbsp; &mdash;&nbsp; AISI has tracked the cyber capabilities of frontier AI models since 2023.&nbsp; On our evaluations, the most capable models &hellip; </p>