Gemma is an open source artificial intelligence model launched by Google. The model is available to all developers through Google AI Studio and other channels. However, it may be difficult for developers to find Gemma from Google AI Studio because the model has been withdrawn by Google.
Google did not explain why it removed the open source artificial intelligence model, but before Google removed the model, US Republican Senator Marsha Blackburn sent a letter to Google CEO Sundar Pichai asking Google to explain why the model contained false accusations about her.

Blackburn also asked Google to explain why its models experience such glitches, while she tied the issue to ongoing hearings accusing Google and other companies of creating chatbots that denigrate conservatives.
At the hearing, Google's Malcolm Erickson explained that artificial intelligence hallucinations are a common problem in generative artificial intelligence, and Google is doing its best to mitigate the impact of such errors, but no company has yet been able to completely eliminate hallucinations.
In an open letter, Marsha Blackburn stated that she only became aware of the false accusations against her by the Google Gemma model after the hearing. When asked if Marsha Blackburn had been accused of rape, the Gemma model replied that she had a drug-fuelled affair with a state trooper, and even the model generated false links to fabricated news content (i.e., the referenced content source itself did not exist and was purely fabricated by the model itself)
In fact, this situation is not uncommon in generative artificial intelligence models. As long as the user deliberately guides it, generative artificial intelligence models are prone to such hallucinations. In particular, Google AI Studio includes tools that can adjust model behavior, so it is not easy to spread rumors.