Is Gemini 4 Free? Who Gets Gemini 4 Argon and Carbon (October 2026)
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The short answer: No, not in any full sense. As of October 28, 2026, Google’s flagship Gemini 4 Argon is included with Google AI Pro and Google AI Ultra, and it is not on the free Gemini API tier. The free Gemini app runs Flash-Lite, and Google AI Plus adds Flash, but Google’s plan page does not list Argon for either one.
Gemini 4 Carbon, announced October 28, is not available to the public yet. Google is giving it first to a small group of cybersecurity defenders and says wider access will follow.
Last verified: October 28, 2026, against Google’s plan page, Gemini API pricing page and launch posts linked below. Google changes plans often, so check your own account before you pay.
Gemini 4 in one minute
Google now has two models with the Gemini 4 name. They arrived two weeks apart and are available in very different ways.
- Gemini 4 Argon became generally available on October 13, 2026. Google’s launch post says it is in the Gemini app and AI Mode in Search for Google AI Pro and Ultra subscribers, in the Gemini API paid tier, and in Google Antigravity for Ultra subscribers.
- Gemini 4 Carbon was announced on October 28, 2026. Google’s Carbon post calls it its strongest model and says it starts with “a subset of cyber defenders” before reaching “developers, businesses, and consumers” later. No public date was given.
So when people search “is Gemini 4 free,” the honest answer depends on which Gemini 4 they mean and where they want to use it.
Who gets Gemini 4 Argon, plan by plan
Google’s Gemini subscriptions page (US version, checked October 28) lists these models per plan:
| Plan | Models listed in the Gemini app | Gemini 4 Argon? | Usage vs Free |
|---|---|---|---|
| Free ($0) | Flash-Lite | Not listed | Standard |
| Google AI Plus | Flash (plus everything in Free) | Not listed | 2x |
| Google AI Pro | Gemini 4 Argon, Pro model, Flash | Yes | 4x |
| Google AI Ultra ($99.99 or $199.99/month) | Highest access to Argon, Pro and Flash | Yes, highest limits | 5x or 20x AI Pro |
Google’s page shows the Ultra prices directly. For AI Pro, Engadget reports about $20 a month in the US. Our Gemini Free vs AI Plus vs AI Pro guide covers the October 9 model changes and the reported $4.99 AI Plus price in more detail.
What about AI Plus?
Based on Google’s plan page, AI Plus does not include Argon. It lists Flash, 2x the free usage limits, more Flow credits and 400 GB of storage. If you pay for AI Plus and want Argon in the Gemini app, the plan page points you to AI Pro.
What about AI Mode in Search?
Google says Argon is in AI Mode for Pro and Ultra subscribers. A footnote on the plan page adds that Argon in AI Mode is only offered in select countries, so availability can differ outside the US.
Is Gemini 4 free for developers?
Not on the free tier. Google’s Gemini API pricing page lists Gemini 4 Argon as “Not available” on the free tier. On the paid tier it costs:
| Gemini 4 Argon (API) | Through Nov 30, 2026 | From Dec 1, 2026 |
|---|---|---|
| Input, per 1M tokens | $2.00 | $4.00 |
| Output incl. thinking, per 1M tokens | $10.00 | $20.00 |
| Cached input, per 1M tokens | $0.10 | $0.20 |
Google’s model notes also say Argon has a 1 million token context window shared between input and output, with thinking levels of low, medium and high. Every token is billed, including thinking tokens, so a long reasoning answer can cost more than its visible length suggests.
If you are building something small on the API, budget for the December price, not the introductory one. Google’s Carbon post says Carbon will launch at the same introductory price as Argon and move to the same higher price afterward.
Gemini 4 Carbon: what we know and what we don’t
Google says Carbon ranks first on version 5.0 of the Artificial Analysis Intelligence Index with a score of 59. Artificial Analysis posted the same result and noted Carbon sits second to Claude Opus 5.5 on its coding agent index. Google also lists cybersecurity results: 88.2% on SEC-bench Pro, 54.8% on ExploitGym and 71.0% on CWE-bench.
What Google has not said yet:
- Which consumer plans will get Carbon.
- When developers can call it through the public API.
- Whether any free tier will include it.
Until Google publishes those details, treat any claim that Carbon is “free” or “in the Gemini app” with caution.
Free ways to try Google’s AI right now
You cannot get Argon for free through Google’s consumer plans, but you can still do a lot without paying:
- The free Gemini app. Google lists Flash-Lite plus image generation, Deep Research, Gemini Live, Canvas and Gems on the free plan.
- Gemini for Education. Schools on Google Workspace for Education can turn on Gemini for Education at no cost. Google describes “limited access to our premium AI models” but does not name Argon on that page.
- The free API tier. Google AI Studio’s free tier covers some models, just not Argon.
For most everyday writing, summarizing and brainstorming, a lighter model is often enough. Pay for the bigger model only when you have a task that clearly needs it.
Should you upgrade to AI Pro for Argon?
Ask yourself three questions first:
- Do you hit limits now? If the free plan or AI Plus rarely stops you, the model name alone may not be worth the extra money.
- Do you work with long documents or complex analysis? That is where a flagship model and higher limits tend to matter most.
- Are you already paying for another AI plan? If you have ChatGPT Plus or Claude Pro, compare before adding a second subscription.
If you are weighing AI agents rather than chat plans, our Grok Bot vs. Claude Duet comparison looks at a different kind of tool. For a sense of how much text each chatbot can hold, see AI token limits across ChatGPT, Claude and Gemini.
FAQ
Is Gemini 4 free?
Not fully. Google’s plan page lists Gemini 4 Argon only on Google AI Pro and Ultra, and the Gemini API pricing page says Argon is not available on the free tier. Gemini 4 Carbon is not publicly available yet.
Is Gemini 4 out?
Yes, partly. Gemini 4 Argon has been generally available since October 13, 2026. Gemini 4 Carbon was announced October 28, 2026 and is starting with a limited group of cyber defenders.
Does Google AI Plus include Gemini 4 Argon?
Google’s US plan page does not list Argon for AI Plus. It lists the Flash model and 2x free usage. Argon is listed starting at AI Pro.
How much does Gemini 4 Argon cost?
In the consumer app, it comes with AI Pro (about $20 a month in the US, per Engadget) or Ultra (from $99.99). On the API, it is $2 per million input tokens and $10 per million output tokens through November 30, 2026, then $4 and $20.
What is the difference between Gemini 4 Argon and Carbon?
Argon is the generally available flagship for complex work like coding, finance and science. Carbon is newer, tops the Artificial Analysis Intelligence Index v5 according to Google, and is focused on cybersecurity and long tasks, but access is limited for now.
Can I use Gemini 4 in Google AI Studio for free?
No. Google’s pricing page marks Argon as not available on the free tier. You need the paid API tier.
The bottom line
Gemini 4 is real and impressive on paper, but it is not a free upgrade. Argon starts at Google AI Pro, Carbon is still behind a limited rollout, and the API price doubles on December 1. If the free Gemini app or AI Plus already handles your work, there is no rush to change plans.
For more AI plan and policy changes, see the latest Trending Tech Brief.
