Claude Opus 4.8 system prompt leaked (gist.github.com)

A significant leak involving Anthropic's latest AI model, Claude Opus 4.8, has surfaced, revealing critical details about its capabilities and functionality. Notably, the leaked system prompt outlines the model's diverse access points, including web-based, mobile, and desktop chat interfaces, as well as integration through APIs and products like Claude Code and Claude Cowork. The model's architecture allows users to switch between various iterations of Claude mid-conversation, emphasizing a flexible user experience tailored to different needs. This leak is particularly important for the AI/ML community as it highlights Anthropic's advancements in conversational AI and the detailed thought process behind Claude's refusal handling and ethical guidelines, especially regarding child safety and sensitive requests. Furthermore, the mention of the Claude Mythos Preview—an advanced model currently restricted from public access—raises questions about the direction of AI development within Anthropic and the ongoing balance between innovation and security measures. Overall, the leak not only exposes the inner workings of a leading AI model but also emphasizes the broader implications for ethical AI use in design and deployment.