After roughly two weeks of waiting, Gemini 4 Argon is getting its wider rollout. Google's October 13 announcement confirms access for Google AI Pro and Ultra subscribers in the Gemini web and mobile apps.
Gemini Apps and Antigravity have different access rules
For personal subscriptions, the rollout looks like this:
| Product | Argon access |
|---|---|
| Gemini on the web and in the mobile app | Google AI Pro and Ultra |
| Antigravity app, CLI, and IDE extensions | Google AI Ultra |
| Standalone Antigravity IDE | Not currently supported |
The last distinction matters: Google's Antigravity model table explicitly excludes the standalone IDE. Enterprise access has its own rules.
The same table keeps Gemini 3.8 Flash available to personal plans. Older Gemini 3.7 Flash, 3.6 Flash, and 3.1 Pro are no longer listed as available to those plans, although they remain listed for Enterprise. This change does not mean all third-party models have disappeared.
What Google says Argon is built for
Google describes Argon as a model for deep work on complex, real-world tasks in coding, finance, legal work, cybersecurity, and science, including long tasks with multiple steps. Those are the company's claims in its official rollout announcement.
API prices double after November
The Gemini API documentation gives these prices in U.S. dollars per million tokens:
| Period | Input | Output, including thinking tokens |
|---|---|---|
| Introductory pricing through November 30, 2026 | $2 | $10 |
| From December 1, 2026 | $4 | $20 |
The introductory base rates match GPT-6.1 Sol's standard API rates and are half Claude Opus 5.5's base rates. That compares token prices, rather than the total cost of completing a task. Gemini app subscription access and paid API usage are separate.
For the earlier announcement, see our Gemini 4 Argon introduction.
Translated and clarified from the original Chinese article, published on October 13, 2026. Access details and prices checked against the official sources linked above.
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