Mainstream artificial intelligence writing tools are altering online messages on sensitive political topics like abortion and climate change, according to a study from Oxford and Potsdam universities.
These subtle adjustments could eventually reshape long-term public opinion.
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Technology companies often promote AI systems as efficient tools to rewrite and summarize large amounts of text.
However, researchers discovered that these platforms inject their own distinct political biases, with some systems leaning rightwing and others displaying liberal tendencies.
The study, reported by The Guardian, highlights drastic changes where AI drafting tools completely reversed the original meaning of posts regarding atheism.
In one simulation, an AI altered a draft stating Jesus was not real to claim that "Jesus … was real."
Another test demonstrated that an online complaint tagged as "#climatechangehoax" was rewritten by the system into "#ClimateAction".
Academics from the Oxford Internet Institute and the Hasso Plattner Institute observed these automated adjustments across multiple mainstream large language models.
The analyzed models included systems developed by Elon Musk's xAI, Meta, Google, China's Alibaba, and France's Mistral.
The research team noted that biased phrasing occurs even when users explicitly instruct the AI tool to preserve the original meaning of the text.
Small Shifts, Big Impact
Small shifts in message meanings can amplify across millions of digital interactions, causing public opinion changes larger than the initial bias.
Experts stated that current frameworks like the EU AI Act or the Digital Services Act do not address this issue, creating a severe accountability gap.
