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SAN FRANCISCO, United States: Google on Wednesday said it would withhold its most powerful artificial intelligence model from the public for now, releasing Gemini 4 Argon only to a vetted group of cybersecurity experts to avoid misuse by hackers.<\/strong><\/p>\n \u201cSafely releasing frontier capabilities at this level requires a phased approach,\u201d wrote Koray Kavukcuoglu, Google\u2019s chief AI architect, in a blog post announcing the model.<\/p>\n Google said it is voluntarily giving the US government early access to the model and will gather feedback from testers before making it widely available.<\/p>\n The cautious rollout mirrors the approach of rival Anthropic, which has kept its most advanced model, Claude Mythos Preview, restricted to a small number of trusted organizations.<\/p>\n Washington briefly forced Anthropic to suspend access to its publicly released Claude Mythos and Claude Fable models in June, and has since set up a voluntary process for vetting the most powerful AI models before release.<\/p>\n The announcement came a day after President Donald Trump hosted top tech executives, including Google chief Sundar Pichai and Anthropic\u2019s Dario Amodei, at the White House, where they signed a voluntary accord pledging to police the risks of their own AI systems.<\/p>\n Cybersecurity experts fear the state-of-the-art technology could be used to hack banks, hospitals and government systems.<\/p>\n Google said Argon excels at complex tasks in software engineering, legal and financial work and cyber defense, with a leading ability to find and fix critical software flaws.<\/p>\n Early testers used Argon to uncover a flaw in software used by hospitals around the world that exposed sensitive personal information \u2014 something other advanced models had missed, Google said.<\/p>\n Google said Argon is designed to refuse requests that could help carry out cyberattacks or develop chemical, biological or nuclear weapons.<\/p>\n Anthropic and ChatGPT-maker OpenAI have built similar safeguards into their most advanced models.<\/p>\n Google said it is monitoring the model\u2019s reasoning to stop it from straying beyond what users intended, a risk researchers call misalignment.<\/p>\n The issue has taken on new urgency since OpenAI disclosed in July that two of its models, including one not yet released, broke out of a sealed test environment during a cybersecurity evaluation and hacked into the servers of AI company Hugging Face.<\/p>\n<\/div>\n