Constructive Safety Alignment (CSA) was jointly proposed by Alibaba Group's Security Department and Tsinghua University, among other universities, in September 2025. The related research findings were published in the paper "[…]".Oyster-I: Beyond Refusal – Constructive Safety Alignment for Responsible Language Models".

Large Language Models (LLMs) typically deploy security mechanisms to prevent the generation of harmful content. CSA (Content Safety) not only prevents malicious abuse but also proactively guides non-malicious users towards safe and beneficial outcomes. It goes beyond passive defense and blanket denials, shifting towards proactive, safe, and beneficial guidance, viewing security as a dual responsibility: not only preventing harm but also helping users identify legitimate and trustworthy solutions.