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... In reviewing 11 leading AI models and human responses to interactions with those models across various scenarios, a team of Stanford researchers concluded in a paper published Thursday that AI sycophancy is prevalent, harmful, and reinforces trust in the very models that mislead their users.

"Even a single interaction with sycophantic AI reduced participants' willingness to take responsibility and repair interpersonal conflicts, while increasing their own conviction that they were right," the researchers explained. "Yet despite distorting judgment, sycophantic models were trusted and preferred."

The team essentially conducted three experiments as part of their research project, starting with testing 11 AI models (proprietary models from OpenAI, Anthropic, and Google as well as open-weight models from Meta, Qwen DeepSeek, and Mistral) on three separate datasets to gauge their responses. The datasets included open-ended advice questions, posts from the ------------- subreddit, and specific statements referencing harm to self or others.

In every single instance, the AI models showed a higher rate of endorsing the wrong choice than humans did, the researchers said. ...