“ChatGPT shouldn’t have political bias in any direction,” OpenAI wrote in a post on Thursday. The latest GPT-5 models come the closest to achieving that objective goal, according to results from an internal company “stress-test” of ChatGPT’s responses to divisive issues. The test has been months in the making, the company says, and falls on the heels of a yearslong effort to tamp down on complaints from conservatives that its product is biased. OpenAI developed a test that evaluates not only