Google released its Gemini 4 Argon frontier large language model on October 13, 2026, after a limited September 30 rollout to vetted cybersecurity partners in the Fairwind Program. The model targets complex, multi-step tasks in coding, finance, legal work, science, and cybersecurity, with an industry-leading 1-million-token output limit and strong benchmark results on measures like DeepSWE and the Vals Index. It is now available to paid Gemini Pro/Ultra subscribers, developers via the Gemini API, and enterprise users, priced initially at $2 per million input tokens and $10 per million output tokens through November 30. This launch follows months of delays on prior Gemini 3.5 plans and positions Google against OpenAI’s GPT-6 Astra and Anthropic’s Claude 5 series amid ongoing internal leadership changes at DeepMind. Traders are likely monitoring the November pricing shift, potential follow-on Gemini 4 variants, and any early successor signals such as the reported “Carbon” model for further sentiment shifts.