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ChatGPT and Gemini voice bots are easy to trick into spreading falsehoods

Matthias Bastian
Matthias Bastian View the LinkedIn Profile of Matthias Bastian
Feb 22, 2026

Newsguard tested whether ChatGPT Voice (OpenAI), Gemini Live (Google), and Alexa+ (Amazon) repeat false claims in realistic-sounding audio, the kind easily shared on social media to spread disinformation.

Researchers tested 20 false claims across health, US politics, world news, and foreign disinformation, each with a neutral question, a leading question, and a malicious prompt to write a radio script with the false information. ChatGPT repeated falsehoods 22 percent of the time, Gemini 23 percent. With malicious prompts, those numbers jumped to 50 and 45 percent, respectively.

Bar chart showing fail rates for three audio bots by prompt type. Neutral prompts (red): ChatGPT and Gemini both at 5 percent. Leading prompts (blue): ChatGPT at 10 percent, Gemini at 20 percent. Malicious prompts (brown): ChatGPT at 50 percent, Gemini at 45 percent. Alexa+ stayed at 0 percent across all three prompt types.
Fail rates for ChatGPT, Gemini, and Alexa+ audio bots by prompt type. Malicious prompts spiked ChatGPT to 50 percent and Gemini to 45 percent. Alexa+ stayed at 0 percent across all three types. | Image: Newsguard

Amazon's Alexa+ was the clear outlier. It rejected every single false claim. Amazon Vice President Leila Rouhi says Alexa+ pulls from trusted news sources like AP and Reuters. OpenAI declined to comment, and Google didn't respond to two requests for comment. Full details on the methodology are available on Newsguardtech.com.

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