Google Unveils Gemini 4 Argon With Lowest Hallucination Rate Among Frontier Models

Google has announced Gemini 4 Argon, its long-awaited flagship AI model, achieving the lowest hallucination rate in its class while matching the overall performance of OpenAI's GPT-6 Astra. The announcement on September 30, 2026, marks the end of a months-long silence from the search giant, which halted public updates on Gemini 4's development to focus on safety evaluation before release.