Google announced Gemini 4 Argon on September 30, 2026, as its new frontier large language model optimized for long-horizon software engineering, enterprise tasks in legal and finance, and cybersecurity defense. The model rolled out first to vetted partners in the Fairwind Program and internal Google teams, with phased expansion planned next to paid API users and Google AI Ultra subscribers before wider developer and consumer access. It leads benchmarks such as DeepSWE v1.1 at 77.9% and the Vals Index while offering a 1-million-token output limit and introductory pricing of $2 per million input tokens and $10 per million output tokens. No public API availability or firm broader launch date has been set as of mid-October, leaving trader sentiment focused on the timing of general release amid ongoing safety evaluations and competitive pressure from recent OpenAI and Anthropic models.