Google released its flagship Gemini 4 Argon model globally on October 13, 2026, after a September 30 announcement that initially limited access to trusted cybersecurity partners via the Fairwind Program. The rollout targets developers and enterprises through the Gemini API at introductory pricing of $2 per million input tokens and $10 per million output tokens, plus Google AI Pro and Ultra subscribers in the Gemini app and Antigravity coding platform. This follows months of delays, the cancellation of Gemini 3.5 Pro, and DeepMind leadership changes, as Google works to close the gap with OpenAI and Anthropic on complex coding, multi-step reasoning, and cybersecurity benchmarks. Traders are watching subscriber access expansions, benchmark comparisons, and the November 30 pricing increase for signs of broader adoption or further model iterations.