Show HN: Beating GPT5.5-xhigh for Coding agent security with SLMs and IRM

A cybersecurity startup claims its small language model, post-trained with inline reference monitoring, outperforms GPT5.5-xhigh on coding agent security benchmarks including LinuxArena and SleightBench. The free product is available at harden.run, with full benchmarks in the blog post.

Coding agents craft arbitrary code so securing them is more complicated than red-teaming. We post trained a cyber-security small llm, changed how it reasons and supplemented our controls using program analysis techniques such as inline reference monitoring to outperform GPT5.5-xhigh on hard benchmarks like LinuxArena and SleightBench. Free product available at harden.run and full benchmarks in the blog post. Comments URL: https://news.ycombinator.com/item?id=49472151 https://news.ycombinator.com/item?id=49472151 Points: 2 Comments: 1