<p>Staggered release of ChatGPT 5.6 follows similar restrictions on rival firm Anthropic’s latest AI models</p><p>OpenAI released its latest advanced AI model, called <a href="https://www.theguardian.com/technology/chatgpt">ChatGPT</a> 5.6, on Thursday after earlier delaying the public rollout over US government concerns about cybersecurity. The <a href="https://www.theguardian.com/us-news/trump-administration">Trump administration</a> had requested last month that <a href="https://www.theguar