OpenAI has introduced GPT-5.2, its smartest artificial intelligence model yet, with performance gains across writing, coding, and reasoning benchmarks. The launch comes just days after CEO Sam Altman internally declared a “code red,” a company-wide push to improve ChatGPT amid intense competition from rivals.“We announced this code red to really signal to the company that we want to marshall resources in one particular area, and that's a way to really define priorities,” said OpenAI’s CEO of app...