Google has unveiled Gemini 4 Argon, its most powerful AI model yet, topping 13 of 18 benchmarks against OpenAI's GPT-6 Astra and Anthropic's Claude Opus 5.5. The model targets coding, legal, finance and cybersecurity work, with a 1 million token output limit. It is rolling out first to cyber defenders via the Fairwind Program, with paid API users and Google AI Ultra subscribers next in line.