Gemini 4 Argon reaches Google AI Pro in Antigravity with a weekly quota Google

Google is rolling out Gemini 4 Argon in Antigravity to paid Google AI Pro subscribers. The Antigravity team announced it on X on October 15, 2026. Pro users get a separate, weekly-only quota for Argon on top of their existing Gemini 3.8 Flash quota.

Argon launched on October 13. At launch, the Antigravity X account and Google's main blog named Google AI Ultra subscribers for Antigravity access. Google describes Argon as its model for complex workflows across real-world software engineering. The Antigravity team says demand has been high and it scaled capacity deliberately before the Pro rollout.

What changes

• Paid Google AI Pro subscribers can now pick Gemini 4 Argon in Antigravity.
• Only non-trial Pro subscriptions qualify. Free and Google AI Plus users do not get Argon.
• Argon works in the Antigravity App, the Antigravity CLI and IDE extensions. It is not available in the Antigravity IDE.
• Pro gets a separate, weekly-only Argon quota on top of the existing Gemini quota for 3.8 Flash, so using Argon does not use up the Flash quota.
• Google has not published how many Argon requests the weekly quota allows.

Who can use Gemini 4 Argon in Antigravity

Sources

• Google Antigravity on X: Argon rolling out to paid Google AI Pro subscribers
• Google Antigravity on X: Gemini 4 Argon launch post
• Antigravity docs: Choose a model
• Antigravity docs: Plans
• Antigravity blog: Gemini 4 Argon in Google Antigravity