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Gemini Ultra vs Gemini Pro vs Gemini Nano: Google's Gemini versions explained

What's different about Gemini's three modes?

Published onFebruary 8, 2024

Google Gemini is the latest large language model (LLM) made by Alphabet’s Brain Team and DeepMind, offering a major upgrade over its predecessor. The new LLM has a lot of potential, built from the ground up to be multimodal. Previously creating multimodal models involved a lot of tweaking and stitching to make them work, whereas Google’s solution is designed to accommodate different modes tailored for specific use cases.

There are three distinct versions of Gemini, all designed with different advantages and disadvantages. Let’s jump right in and take a closer look at Gemini Ultra vs Gemini Pro vs Gemini Nano.

What is Google Gemini, and what’s the difference between Gemini Nano, Pro, and Ultra?

Google IO 2023 gemini

It used to be that Gemini was simply the name of the new LLM from Google which replaced PaLM2 on Bard, but things got a bit more complicated in February of 2024 thanks to the announcement that Google Bard would be rebranded as Google Gemini. Since then we’ve seen Gemini arrive on Android as a total replacement for Google Assistant, at least for those with a compatible device that wish to upgrade. These days, Gemini represents the LLM as a whole, as well as its chatbot experience. There are actually three different versions of the Gemini engine, however.

So what is the difference between Gemini Ultra vs Gemini Pro vs Gemini Nano? All three versions are built from the same code and work similarly, but they have different use cases. You wouldn’t equip a tiny Honda hatchback with a V10 engine, right? The same general idea applies to the different versions of Gemini as well. Google Gemini Nano is your reliable 4-cylinder engine, perfectly able to get you where you need to go while being lightweight and efficient. Google Gemini Pro is effectively your V6, a standard engine size that applies to a wide range of tasks. Finally, we have Google Gemini Ultra, which is the equivalent of a V10 with tons of capabilities but at the cost of efficiency, as it needs a lot of power to run.

If you have the free version of the Gemini assistant your experience will be powered by Gemini Pro, those with the more expensive Gemini Advanced will have an even more powerful experience thanks to Gemini Ultra.

Google Gemini vs GPT

openai gpt announcement
Calvin Wankhede / Android Authority

How do the three modes of Google Gemini compare to GPT? Google Gemini Nano doesn’t have a direct comparison, but Gemini Pro and Ultra are effectively Google’s answer to GPT 3.5 and GPT 4, respectively. Not only does Gemini have the power of Google Search so it can retrieve more current information, but it also is ahead of both engines in the vast majority of metrics. For example, Gemini Ultra outperformed GPT 4 in MATH and GSM8K benchmarks and is worlds above GPT for Python code generation.

In the next section, we’ll break down each version of Google Gemini, as well as a few more details on how each version compares to their respective GPT equivalent.

Google Gemini Nano: A tale of two sizes

google pixel watch 2 buds pro 8 pro family bay blue 7
Rita El Khoury / Android Authority

Google Gemini is the most lightweight and efficient of the models, designed to run directly on mobile devices. Google wasn’t content with just three versions of Gemini as Nano has two variants of its own: Nano-1 and Nano-2. The former can handle 1.8 billion parameters, while the latter is capable of 3.25 billion.

Although both are designed to run directly on lower-powered hardware, Nano-1 is for low-memory devices and Nano-2 is geared towards high-memory products.

Currently, Gemini Nano is rolling out in the form of the new AICore app for Pixel 8 Pro users. This app enables a whole host of new AI features previously promised for the Pixel 8 Pro including the ability to summarize webpages using Google Assistant, new Google Photos AI tricks, and much more.

Google Gemini Pro: The engine that runs the upgraded Bard experience

Assistant with Bard Presentation at Made by Google Event 2023
C. Scott Brown / Android Authority

Gemini Pro is the middle tier mode, and what is currently powering Google Bard. The good news is Bard should be able to better compete with ChatGPT now that it runs on Gemini Pro, at least if Google’s claims are accurate.

Reportedly Pro is more capable than GPT-3.5 in six different benchmarks and is especially optimized for tasks like brainstorming, summarizing content, and writing. While this isn’t the newest version of GPT, it is the most front-facing as it is what is powering the popular ChatGPT service.

Google Gemini Ultra

Google Gemini Ultra represents the highest tier and is the LLM model that gives GPT-4 a run for its money, as mentioned above. The Ultra exceeds 30 of 32 academic benchmarks for current state-of-the-art results used for LLMs and beats GPT-4 in every category outside of commonsense reasoning for everyday tasks.

While GPT-4 can understand the context of just words and images, Gemini goes a step further and can understand nuanced information for words, images, audio, coding, and even more complicated topics relating to mathematics and physics. It can also respond quickly to your questions, essentially in real time. Unfortunately, it’s also not available in any form just yet and so it remains more of a promise than anything.

How to access Google’s Gemini powered chatbot Bard

Stock photo of Google Bard website on phone 2
Edgar Cervantes / Android Authority

The easiest way to access Bard is to go to You’ll need to sign into your Google account if you aren’t already. That’s it! You don’t need to do anything to switch Bard over to Gemini, as this was done by Google in the back-end. Of course, it is worth noting Bard is only available in English, though you can find it in more than 170 countries.

The new Gemini-boosted Bard will initially be available in English in more than 170 countries, though surprisingly not in the United Kingdom or Europe. This is due to regulatory hurdles, which will hopefully be solved shortly.

Google Gemini release date: When will you be able to use it?

Google Logo as seen at Google Store Mountain View
C. Scott Brown / Android Authority

The Google Gemini release date is a bit complicated as it varies depending both on the LLM version and the applications it will be integrated into. Still here’s a basic breakdown:

  • Google Gemini Nano will arrive as a preview in Google’s new AI Core app, which started hitting Pixel 8 Pro users on December 6. It’s expected to eventually make its way to other Android 14 devices as well but at least for now it remains a Pixel exclusive.
  • Google Gemini Pro launched on December 6th as an under-the-hood upgrade to Google Bard. It is also expected to roll out to enterprise customers using Vertex AI on December 13.
  • Google Gemini Ultra is the most powerful version of the LLM and is expected to be a more suitable competitor to ChatGPT. Unfortunately, it’s not coming just yet. While Google hasn’t locked down the Gemini Ultra release date yet, it’s not expected until sometime in 2024.


Google Bard initially launched on March 21, 2023 using LaMDA as the engine, until it latter upgraded to PaLM 2. As of December 6, Bard has swapped PaLM for an optimized version of Gemini Pro.

Yes and no, as it depends on the version and what you’re looking for. Gemini Ultra is (on paper, at least) a step ahead of GPT-4 in nearly every metric except for commonsense reasoning for everyday tasks. Meanwhile, Gemini Pro arguably sits between GPT 3.5 and GPT 4 in terms of performance and capabilities.

Yes, Google Bard is free to use, similar to ChatGPT. Unlike the latter service, Bard allows you to analyze images and other elements for free, while OpenAI keeps some of these ChatGPT features locked behind its premium tier.

Yes you can use Google Bard on your phone, though you’ll need to use Chrome or another browser to access it. Google is working to bring Bard functionality to Google Assistant but that’s an experiment that is rolling out slowly for now.

There is no official Google Bard app, but the web version has a very mobile friendly layout and can be pinned to the desktop as an Android web app for easier access.

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