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A Washington Post investigation finds most major AI chatbots respond with left-leaning positions on political questions, even models marketed as conservative—with Google's Gemini standing out as a rare balanced exception.

THE DECODER10h ago6 min read
A Washington Post investigation finds most major AI chatbots respond with left-leaning positions on political questions, even models marketed as conservative—with Google's Gemini standing out as a rare balanced exception.

Key takeaway

A Washington Post investigation found that most major AI chatbots—including those marketed as conservative—lean left on political questions, with OpenAI's GPT-5.5 giving exclusively left-leaning answers 80 percent of the time and Deepseek's V4 Pro at 70 percent. Google's Gemini 3.1 Pro was the exception, presenting both sides 93 percent of the time. The findings show that despite industry pushes for "anti-woke" models, training data and deliberate design choices continue to shape how chatbots respond to politically divisive topics.

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3 Key Points

  • What happened

    The Washington Post tested six leading AI models on political questions and found that OpenAI's GPT-5.5 gave exclusively left-leaning answers 80 percent of the time, while Deepseek's V4 Pro came in at 70 percent. Even xAI's Grok 4.3, which Elon Musk promotes as "truth-seeking" and anti-"woke," produced more right-leaning answers than other models tested but still gave exclusively left-leaning responses more often. Google's Gemini 3.1 Pro was the outlier, presenting both sides 93 percent of the time.

  • Why it matters

    The findings suggest that despite calls for "anti-woke" AI, the underlying training data and design choices continue to influence how models respond to politically charged questions. The fact that Grok took an exclusively right-leaning stance on trans rights—aligning with Musk's public position—suggests someone deliberately steered the model's output on certain topics, pointing to the tension between what a model is trained on and what its developers choose to emphasize.

  • What to watch

    Anthropic's Claude Opus 4.8 gave exclusively left-leaning answers 43 percent of the time and presented both sides in 57 percent of cases. Gab's Arya, marketed as built with "Christian values and conservative principles," responded with left-leaning arguments twelve times more often than right-leaning ones. The Washington Post's full code and supplementary analysis are available on GitHub.

FAQ

Which AI model gave the most balanced responses on political questions?
Google's Gemini 3.1 Pro presented both sides 93 percent of the time, with only 7 percent of answers containing exclusively left-leaning arguments and no exclusively right-leaning responses.
Did any model marketed as conservative actually show conservative bias?
xAI's Grok 4.3, promoted by Elon Musk as "truth-seeking" and anti-"woke," did produce more right-leaning answers than any other model tested, but it still gave exclusively left-leaning responses more often. Gab's Arya, marketed as built with "Christian values and conservative principles," responded with left-leaning arguments twelve times more often than right-leaning ones.
How did OpenAI's GPT-5.5 and Deepseek's V4 Pro compare?
OpenAI's GPT-5.5 gave the most skewed answers, with 80 percent exclusively left-leaning responses and just one exclusively right-leaning position. Deepseek's V4 Pro came in close behind at 70 percent exclusively left-leaning answers.

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