OpenAI says GPT-5 has 30 percent less political bias than its prior AI models.

That's a difficult claim to assess, given that AI model bias has been an issue since machine learning became a thing, and particularly since the debut of ChatGPT (GPT-3.5) in late 2022.

As we noted in 2023, ChatGPT at the time demonstrated left-leaning political bias , based on its score on the Political Compass benchmark.

Left-leaning political bias in LLMs is inevitable, argues Thilo Hagendorff, who leads the AI safety research group at the University of Stuttgart, in a recent pre-print paper . He contends right-wing ideologies conflict with model alignment guidelines to make models harmless, helpful, and honest (HHH).

"Yet, research on political bias in LLMs is consistently framing its insights about left

See Full Page