Chain of News 28/07/2026

**Top Story** The European Union's AI Act has introduced a set of criteria for classifying AI systems, which will have significant implications for developers working with AI technologies. According to the EU AI Act, AI systems will be classified based on their potential impact on society, with those having a higher impact being subject to stricter regulations. This classification system will help ensure that AI systems are developed and deployed in a responsible and transparent manner. Developers will need to carefully consider these criteria when designing and building AI-powered applications, as non-compliance could result in significant fines and reputational damage. The EU AI Act's classification system is a crucial step towards establishing trust in AI technologies and promoting their safe and beneficial use. As the AI landscape continues to evolve, developers must stay informed about these regulatory developments to ensure they are building compliant and socially responsible AI systems. SOURCES: [3] **AI Models & Research** The article on prompting Claude Opus 5 highlights the importance of understanding behavioral differences and prompting patterns in AI models. By examining response verbosity, agentic narration, task scoping, subagent delegation, self-correction, and output artifacts, developers can better comprehend how AI models like Claude Opus 5 generate responses and make decisions. This knowledge can be applied to improve the performance and reliability of AI-powered applications, particularly those that rely on natural language processing and generation. Furthermore, the study of AI models like Claude Opus 5 can provide valuable insights into the development of more advanced and sophisticated AI systems, enabling developers to create more effective and efficient AI-powered solutions. SOURCES: [1] **Developer Tools & Frameworks** No significant developments today SOURCES: **Industry & Business** The city of Messina has launched the Gemello Digitale Urbano, a digital twin of the city that utilizes over 40,000 sensors and artificial intelligence to anticipate and mitigate critical issues, improving public services. This initiative demonstrates the growing adoption of AI technologies in urban planning and management, highlighting the potential for AI to drive innovation and efficiency in public sector applications. The Gemello Digitale Urbano project showcases the potential for AI to enhance the quality of life for citizens, making it an exciting development for AI developers and researchers interested in exploring the applications of AI in urban planning and management. The Aifa has also published guidelines on the use of artificial intelligence in promotional materials for pharmaceuticals, which will impact how pharmaceutical companies develop and deploy AI-powered marketing campaigns. SOURCES: [2], [6] **Worth Watching** The relationship between human authority and AI is becoming increasingly complex, with AI systems challenging traditional notions of authority and decision-making. The article on the challenge of AI to human authority highlights the need for a nuanced understanding of the ethical implications of AI development and deployment. Additionally, the article on the role of AI in teams emphasizes the importance of collaboration, trust, and learning in harnessing the potential of AI to augment human capabilities. As AI continues to evolve and permeate various aspects of society, it is essential to consider the social and ethical implications of AI development and deployment, ensuring that AI systems are designed and used in ways that promote human well-being and dignity. SOURCES: [4], [5]