Gemini 4 Argon in the App: Rollout Status and Checklist

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Google announced on October 13, 2026, at 18:04 CET that Gemini 4 Argon is rolling out to Google AI Pro and Ultra subscribers in the Gemini app and in Search AI Mode. However, on my Pro account checked in Poland on the evening of October 13, Argon had not appeared yet. This is not an account glitch, but a staged rollout. Here is what Google promised, what to verify on your account, and how to access Argon today without waiting for the web or mobile interface. A complete overview of the model is available in the Gemini 4 guide.

What Google announced on October 13

Sundar Pichai stated on X that Argon is rolling out globally: for developers and organizations via the paid Gemini API and the Gemini platform, for Ultra subscribers in Google Antigravity, and for Ultra and Pro subscribers in the Gemini app and Search. Google’s official blog post confirms this, adding Search AI Mode. According to Google, the model picker in the app will offer four choices:

• 3.5 Flash-Lite,
• 3.8 Flash,
• 3.1 Pro,
• 4 Argon.

The wording matters: Google’s announcement states that “Argon is rolling out today globally”, while 9to5Google reported that Argon “is starting to roll out” to the Gemini app and Antigravity. As of October 13, the release is in progress rather than active simultaneously for all accounts.

Why Argon might not show on your Pro account yet

Three key details explain the delay:

1. The rollout is staged. Google has not provided an exact schedule for complete distribution. An Android Police editor with a Google AI Pro subscription also reported not seeing Argon in the app on October 13.
2. Regional rollouts are underway. Google does not exclude European users; regional subscription pages already list Argon under the Pro and Ultra tiers.
3. AI Mode has distinct geographic availability. Google has not published a full list of countries supporting Argon in Search AI Mode. Subscription notes mention that Gemini 3 Pro and Deep Search in AI Mode are limited to selected regions. I have not independently verified Argon in AI Mode. Learn more about the interface in our guide to AI Mode.

Account checklist - what to check

Based strictly on Google’s published documentation, here is what to confirm on your account:

1. Pro or Ultra tier required. Google AI Plus only includes 3.6 Flash and does not provide Argon. Free tiers do not include it either.
2. Personal accounts vs. Workspace. On Google Workspace accounts, access is determined by organization licensing rather than individual consumer subscriptions. In Google’s enterprise tables, Argon requires AI Expanded Access (up to 200 daily prompts) or AI Ultra Access (up to 500 daily prompts). It is marked as “N/A” for Business Standard, Business Plus, or Enterprise Standard without add-ons. Check for a Pro, Expanded, or Ultra badge at the top of gemini.google.com.
3. Age verification (18+). Google specifies that AI subscription tiers are restricted to users aged 18 and older.
4. Model selector position. The active model is selected at the bottom of the chat prompt area by clicking the current model name. If Argon appears with a lock icon, Google documentation points to a subscription limitation. If it is entirely absent, the rollout has likely not reached that account yet.
5. Automatic model selection. Google allows users to disable automatic model routing in Settings under usage limits. Manual model selection requires disabling this toggle.
6. Browser interface and mobile apps. Check both gemini.google.com and the mobile Gemini application. Google has not specified whether web or mobile receives the update first. Refreshing, signing out and back in, or updating the app will not force the rollout, but it ensures cached states are cleared.
7. Interface language. Google has not listed language prerequisites for Argon. Changing the display language to English was not tested for early access bypasses.

Where Argon is available

How to access Gemini 4 Argon today

OpenRouter - the fastest path

This route was used for initial testing on October 13. OpenRouter provides single-endpoint access to hosted models:

1. Create an account at openrouter.ai and add credits in the dashboard.
2. Open Chat, locate “Gemini 4 Argon” in the model directory, or call the model identifier google/gemini-4-argon through the API.
3. Pricing matches official Google API rates: $2 per million input tokens and $10 per million output tokens, with a 1,048,576-token context window.

For reference, running a benchmark suite of 23 tasks cost a total of $0.22. Further pricing breakdowns can be found in our analysis of Gemini 4 Argon pricing.

Gemini API via Google AI Studio

The model identifier is gemini-4-argon. A paid Gemini API account is required; Google’s pricing tables list Argon as “Not available” on the free tier, and consumer Google AI Pro subscriptions do not grant API credits. Setup instructions for API keys are detailed in our guide to Google AI Studio. I do not maintain a paid API Studio key, so direct API access was not tested first-hand.

Google Antigravity - Ultra tier

Within Antigravity (desktop application and CLI), Argon requires a Google AI Ultra subscription. Pro accounts include basic Antigravity access without Argon. Academic researchers can apply to Google’s access program, which offers 6 months of top-tier Antigravity access under rolling admissions.

Frequently asked questions

Is a VPN required?

No. Google announced a global rollout without geo-blocking, regional subscription pages list Argon under Pro, and third-party gateways like OpenRouter function worldwide.

Is upgrading from Plus to Pro worth it for Argon?

Only if you require expanded limits or 5 TB of cloud storage. For occasional queries, paying per token via OpenRouter or the API is considerably more cost-effective.

Which reasoning depth should you use?

Google provides three reasoning settings: low, medium, and high, defaulting to low. Testing performed via OpenRouter using the low setting scored 99.5% across 23 reasoning tasks.

// read moreGoogle Gemini 4 Argon: New Model for Complex Professional TasksNewsGemini 4 Argon: API pricing, Pro and Ultra access, and test resultsNewsGoogle Gemini 4 Argon: 1M Token Output at $2/10 USDNews

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