An independent open-source initiative, the Neutrality Project, has found that the most widely used frontier AI models overwhelmingly default to left-leaning positions on political, social, and cultural issues. The project evaluated 18 models from twelve labs across six dimensions, and of 108 measured positions, 97 landed left of center, producing an average lean of -0.41. The strongest progressive tilt appeared on environmental questions. Only models from xAI’s Grok family sat near the political center, and none leaned to the Conservative side. Google’s Gemma even ships a guardrail layer that actively suppresses right-leaning answers. Grok 4.5, released by xAI on July 8, emerged as the standout with a near-perfect -0.02 bias score. By contrast, flagship models from OpenAI (ChatGPT), Google (Gemini), Anthropic (Claude), and Meta (Llama) consistently clustered on the progressive side. Samuel Cardillo said on LinkedIn, “At a day and age where we delegate further and further our critical thinking to models trained on data and rules that we do not know about, accountability and visibility is important.” These results echo earlier research, including a Washington Post analysis finding ChatGPT delivering exclusively left-leaning arguments in roughly 80 per cent of political test questions.