OpenAI has introduced its GPT-5.3 Instant model, claiming enhanced accuracy and fewer unnecessary refusals during interactions. The update aims to improve contextual understanding and reduce "cringe-worthy" preambles in responses. Despite these advancements, OpenAI faces criticism for a controversial agreement with the Pentagon regarding AI deployment, sparking user concerns over surveillance and military applications. Meanwhile, rival Anthropic's Claude has overtaken ChatGPT in U.S. app downloads, intensifying competitive pressures in the AI sector.