Gemini 4 Argon reaches the paid API and Pro subscribers in the app
Google released Gemini 4 Argon through its paid API on October 13. AI Ultra subscribers can use it in Studio and Antigravity, while Pro and Ultra subscribers get app access; long-output settings and API costs have separate limits.
The big change
What changed: The model has moved from a restricted test to a stable, billed API release. Developers can now use a named endpoint and published limits to evaluate Argon in their own workflows; Google AI Pro subscribers get Argon in the Gemini app, but the Pro subscription does not include API or AI Studio access to this model.
Why it matters: The separate access paths affect both who can try Argon and what a test costs. A developer can budget tokens and choose an output limit, while an app subscriber can use the model without integrating an API. Google's robotics examples show possible uses but do not establish how reliably those systems work outside the reported demonstrations.
What to watch: Google's introductory API rates expire after November 30. Teams evaluating long outputs also need to decide whether background execution and its larger output budget fit their tasks; the default synchronous limit remains far below the shared million-token window.







