Gemini 4: Is It Free? Release Dates and Plan Access

Is Gemini 4 free?

Partly. As of 15 November 2026, the fast everyday model of the family, Gemini 4 Hydrogen, can be used without paying, while the two larger models, Gemini 4 Argon and Gemini 4 Carbon, are only available on paid plans ^[1][4]. Google says Hydrogen brings "cutting-edge intelligence to everyone" ^[1].

There are three free ways to reach Hydrogen today:

• Google Search. Hydrogen is the default model in AI Mode for all users and handles the hardest questions in AI Overviews ^[1][6].
• The Gemini app. Google's launch footnote says free users get Hydrogen through automatic model selection when it is the appropriate model for the prompt, and the free plan card lists a Flash-Lite model ^[1][4].
• The Gemini API free tier. Developers can call Hydrogen in Google AI Studio and the Gemini API without charge, within the free tier's limits ^[5].

The free routes come with conditions. Usage limits on the free plan are lower than on paid plans, and on the free API tier Google states that prompts and responses are used to improve its products, which is not the case on the paid tier ^[4][5]. Argon and Carbon are marked as not available on the API free tier at all ^[5].

So the honest answer to "is Gemini 4 free" is: the everyday model is, the frontier models are not.

When was Gemini 4 released?

Gemini 4 was not released on a single day: Google announced the first model, Gemini 4 Argon, on 30 September 2026 and followed with Gemini 4 Hydrogen on 12 November 2026 ^[1][8]. Each model reached a different group of users first. The main dates are:

• 30 September 2026: Google announced Gemini 4 Argon and gave it first to cyber defenders, who Google later described as Fairwind Program partners ^[3]; Digital Trends reported that a wider release would follow once testing with US government agencies and trusted partners was finished ^[8].
• 13 October 2026: Argon became available to developers through the paid Gemini API, to Google AI Ultra subscribers in Google Antigravity, and to Google AI Pro and Ultra subscribers in the Gemini app and AI Mode in Search ^[3][7].
• 10 November 2026: Gemini 4 Carbon, Google's strongest model, reached paying API customers and began rolling out to Google AI Ultra subscribers in the Gemini app, Google Antigravity and AI Mode ^[2].
• 12 November 2026: Gemini 4 Hydrogen launched for all tiers of Google AI Studio and the Gemini API, for Gemini for business, the Gemini app and Google Search, and for paid Google AI Pro and Ultra subscribers in Google Antigravity ^[1].

Rollouts are gradual. 9to5Google described the Argon rollout in the Gemini app as staged ^[7], and SiliconANGLE noted that Google's plans page said Argon was still rolling out to Pro subscribers ^[9]. If a model is missing in your account, it may simply not have reached it yet.

What is the difference between Gemini 4 Hydrogen, Argon and Carbon?

Hydrogen is the fast everyday model, Argon is the frontier model Google recommends for most coding and knowledge work, and Carbon is Google's strongest model for the hardest tasks ^[1][2]. Google says Argon remains the right choice for most software engineering and knowledge work, while Carbon is built for tasks that test the limits of a model, such as complex multi-step coding and open-ended scientific research ^[2].

In the Gemini app, the model picker labels them by use ^[6]:

• Quick answers: 3.5 Flash-Lite.
• Everyday help: 4 Hydrogen.
• Detailed research: 3.1 Pro (on Google AI Pro).
• Code and analysis: 4 Argon.
• Most complex work: 4 Carbon.

Google compares Hydrogen with Gemini 3.8 Flash and calls it an upgrade for teams migrating from that model. Google says it finishes tasks 2.5 times faster than Gemini 3.8 Flash at its default setting and scores 51 on the Artificial Analysis Intelligence Index at its default high thinking level, against 50 for Argon, reaching 54 at its highest setting ^[1][6]. These are company figures, not independent tests. Hydrogen accepts up to 1 million tokens of input and can produce up to 1 million output tokens, and it offers four thinking levels: low, medium, high and xhigh ^[1].

For a closer look at the top model, see the Pouyam guide Gemini 4 Carbon: Google's New AI Model and /swarm Explained. For what the new model changes in search results, see Gemini 4 Hydrogen in Google Search: What Changes.

Which Google AI plan gets which Gemini 4 model?

On Google's US plans page, the free plan and Google AI Plus get Hydrogen, Google AI Pro adds Argon, and Google AI Ultra adds Carbon with the highest limits ^[4]. The Plus and Pro cards also carry footer labels naming Argon and Carbon, which do not match their own feature lists, so confirm in the Gemini app before paying ^[4]. The prices below are the US monthly prices shown on 15 November 2026; local prices differ by country ^[4].

• Free ($0): a Flash-Lite model as standard, Hydrogen through automatic selection, Deep Research, Gemini Live, image generation and 15 GB of storage ^[1][4].
• Google AI Plus ($4.99 a month): access to Gemini 4 Hydrogen, double the usage limits of the free plan, video generation and 400 GB of storage ^[4].
• Google AI Pro ($19.99 a month): Gemini 4 Argon, the 3.1 Pro model and Hydrogen, four times the free usage, entry-level limits in Google Antigravity and 5 TB of storage ^[4][9].
• Google AI Ultra (from $99.99 a month): the highest access to Carbon, Argon and Hydrogen. The $99.99 tier gives 5 times the usage of Pro and a $199.99 tier gives 20 times; storage starts at 20 TB ^[4].

Two details are easy to miss. First, Carbon in AI Mode in Search is limited to select countries ^[4]. Second, the paid plans are sold in more than 150 countries and territories, and Google AI Plus in more than 160, so availability depends on where you live ^[4]. Certain AI benefits are also limited to users aged 18 and over ^[4].

The table below sums up where each model can be used without and with a subscription.

How do you use Gemini 4 for free?

The simplest free way to use Gemini 4 is to ask a question in AI Mode in Google Search, which runs on Gemini 4 Hydrogen for all users ^[1][6]. Here are the free routes step by step:

1. In Google Search: open AI Mode and type a detailed, multi-part question. Google says Hydrogen understands long questions with typos better and shows a wider range of links ^[1].
2. In the Gemini app: sign in with a Google Account and leave the model on automatic selection. Gemini can route a prompt to Hydrogen when it is the appropriate model ^[1][6].
3. In Google AI Studio: developers can choose gemini-4-hydrogen and test it on the free tier. Avoid pasting private or confidential data there, because free-tier content is used to improve Google's products ^[5].
4. For researchers: Google invites scientists to apply for free access to Argon and Carbon in the highest usage tier of Google Antigravity for 6 months, subject to eligibility, capacity and selection ^[2][3].

What the free routes do not give you is a guaranteed choice of model. If you need Argon or Carbon on demand, or higher limits for long jobs, a paid plan is required ^[4].

How much does the Gemini 4 API cost?

For developers, Gemini 4 Hydrogen costs $1.50 per million input tokens and $7.50 per million output tokens on the paid tier, and it is free of charge on the free tier ^[5]. Its price is flat across the whole 1 million-token context window ^[1].

Argon and Carbon share an introductory price of $2 per million input tokens and $10 per million output tokens until 30 November 2026. From 1 December 2026 the price doubles to $4 and $20 ^[2][5]. Neither model is available on the free tier ^[5].

A few rules affect the real bill:

• Thinking tokens count as output tokens and are billed, so a higher thinking level costs more ^[5].
• Batch and Flex processing halve Hydrogen's price to $0.75 for input and $3.75 for output, in exchange for slower results ^[5].
• Grounding with Google Search is not available on the free tier. On the paid tier, 5,000 search requests a month are free, shared across Gemini 3 and newer models, and further requests cost $14 per 1,000 ^[5].

The second table compares the per-token prices.

Should you pay for Gemini 4 or stay on the free plan?

For everyday questions, writing and summaries, the free access to Hydrogen in Search and the Gemini app is enough for many people; paying mainly makes sense if you need Argon or Carbon, higher limits or the extra services bundled with a plan ^[1][4]. This is a practical comparison, not a recommendation to buy.

Think about it by need:

• Students and casual users: the free plan already includes Deep Research, Gemini Live and Hydrogen through automatic selection ^[4]. Google AI Plus doubles the limits for $4.99 a month in the US ^[4].
• Programmers and analysts: Argon is labelled for code and analysis and comes with Google AI Pro ^[4][6]. Pro also includes entry-level access to Google Antigravity ^[4].
• Researchers working on very hard problems: Carbon is only in Google AI Ultra for app users ^[2][4]; check the free scientist programme first ^[2].
• Developers: the Gemini API is priced per token on its own pricing page, so check the plan page for what a subscription includes ^[4][5].

Prices for rival services change often. For a side-by-side view, see the Pouyam guide ChatGPT vs Gemini vs Claude in 2026: Models, Prices and Key Differences.

What changes for Gemini 4 after 30 November 2026?

The main confirmed change is the end of the introductory API price: from 1 December 2026, Gemini 4 Argon and Carbon cost $4 per million input tokens and $20 per million output tokens instead of $2 and $10 ^[3][5]. Hydrogen's published price has no end date ^[5].

Other points are still open as of 15 November 2026:

• Wider Argon access: 9to5Google reported Argon in the app for Pro and Ultra subscribers ^[7]; the plans page lists Hydrogen in the Plus feature list but also an Argon label on the Plus card, so Plus access is unclear ^[4].
• Carbon in more countries: Carbon in AI Mode is limited to select countries for now ^[4].
• Safety reporting: Google links model cards for Hydrogen and Carbon and a safety and security report for Carbon; most performance numbers so far come from Google itself ^[1][2].

Plans and limits change without much notice, so check the plans page in your country before you subscribe, and treat the prices here as correct on 15 November 2026 ^[4].