News The Decoder Jul 18
Open-weight models now match frontier cyber performance from just four months ago at a fraction of the cost
By Matthias Bastian
78 score
AI Analysis
The Decoder reports UK AISI findings that open-weight models like GLM-5.2 and DeepSeek V4-Pro now lag closed frontier cyber capabilities by only four to seven months, down from six to ten, with safety mitigations largely ineffective. Open models deliver prior frontier performance at far lower cost.
The British AI Security Institute warns that open-weight models like GLM-5.2 and DeepSeek V4-Pro now trail closed frontier models in cyber capabilities by four to seven months. At the start of 2025, the gap was still six to ten months. It also found that safety measures on open models are largely ineffective, leaving defenders less time to prepare.
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open-weight modelsAI safetycybersecuritycapability diffusion