Gemini 4 Argon is rolling out Google

Google's new frontier model, Gemini 4 Argon, is reaching more users. Google AI Pro subscribers are getting early access: Google's email says it is in the Gemini app and in AI Mode in Search. It also appears as gemini-4-argon with a "New" badge in Google Cloud's Agent Platform studio.

Google announced Argon on September 30, 2026, first for a small group of cyber defenders. The plan was to widen access to developers, companies and consumers, starting with paid API customers and Google AI Ultra subscribers. That rollout is now under way.

What it is

• Built for long, hard work: software engineering, legal and finance research, and finding and fixing security holes.
• Very long answers: up to 1 million output tokens with "long decode". The previous limit was 64K. Without long decode, an answer is capped at 65,536 tokens.
• Big context: 1,048,576 tokens shared between input and output.
• Inputs: text, images, video, audio and PDF. Output is text only.
• Tools: thinking levels (low, medium, high), code execution, function calling and structured output.

Price

Cached input is 95% off the input price.

Sources

• Google: Gemini 4 Argon, our next era of frontier intelligence
• Gemini API: Gemini 4 Argon model page
• Google Cloud: Gemini 4 Argon available on Google Cloud