Gemini 4 Argon now in the API and the Gemini app for subscribers

On September 30 we reported that Gemini 4 Argon was, for now, limited to a few users: Google had first given it to cyber defenders through its Fairwind Program. On October 13, 2026, Google announced that the model is now globally available.

Where you can use it

• In the API, through AI Studio and the Gemini platform. Developers need the paid tier of the Gemini API.
• In the Gemini app and AI Mode in Search, for Google AI Pro and Ultra subscribers.
• In Google Antigravity, for Google AI Ultra subscribers.
• In GitHub Copilot, from October 13, for Copilot Pro+, Max, Business and Enterprise users, with a gradual rollout.

What it costs

The introductory API price is $2 per million input tokens and $10 per million output tokens, with cached input tokens 95% off. After November 30, 2026, the price becomes $4 and $20 respectively. The announcement does not give the prices of the Pro and Ultra subscriptions.

The Gemini API has a single 1M-token limit for input and output combined, which Google calls industry-leading.

What Google says about performance

According to Google, Argon ranks first on the Vals Index, a benchmark covering finance, coding, legal and tax work. Google also reports 87% on ERQA, a reasoning test for robotics, and says that on the Gray Swan prompt-injection benchmark attacks succeeded only 0.7% of the time across 15 attempts.

Google is also offering 10,000 scientists its highest Antigravity usage tier free for 6 months, subject to application and selection.

Greece

Google says “globally” but does not mention Greece or the EU separately, and lists no excluded countries.