A bombshell report published Wednesday found that artificial-intelligence chatbots show a strongly left-leaning political bias. When asked about 29 hot-button issues, OpenAI’s GPT-5.5 answered nearly every question “exclusively with left-leaning arguments” and gave “right-leaning positions just once.” Anthropic’s Claude Opus 4.8 provided just a lefty argument 43% of the time, gave “both-sides” answers 47% of the time, and never served up just a right-leaning answer. Google’s Gemini 3.1 Pro offered both left and right positions in more than 90 percent of its answers. Grok 4.3 gave lefty answers 40% of the time, conservative ones 33% of the time, and “both-sides” answers 27% of the time. ChatGPT took the crown for lefty bias, with 80% of its answers presenting “only left-leaning arguments.” An OpenAI spokesperson said the company builds ChatGPT to be objective and works to measure and reduce political bias. An Anthropic spokesperson said they train Claude to treat different political viewpoints equally and test for bias before every model launch.