Nano Banana Pro launched publicly on November 20, 2025. That is the cleanest official answer because Google's launch post is dated 20 Nov, 2025, and the Gemini API changelog released Gemini 3 Pro Image Preview (gemini-3-pro-image-preview) on the same date.
The part that confuses people is that Google does not present this as one simple, frozen brand page today. The current Gemini image-generation guide now describes Nano Banana as a three-model family: Nano Banana Pro, Nano Banana 2, and Nano Banana. That later family framing is why a release-date query keeps colliding with newer 2026 pages, app-surface complaints, and mixed naming.
If you need one citation-safe sentence for a document, comparison page, or internal note, use this:
“Nano Banana Pro, Google's Gemini 3 Pro Image Preview model (
gemini-3-pro-image-preview), launched publicly on November 20, 2025.
TL;DR
- Official release date: November 20, 2025.
- Official model name today: Gemini 3 Pro Image Preview.
- Why results still feel noisy: some pages drift to November 21, while current docs foreground the later Nano Banana 2 family story.
- Best citation formula: Nano Banana Pro, Google's Gemini 3 Pro Image Preview model, launched publicly on November 20, 2025.
| If you need to know | Safe answer | Why this is the cleanest wording |
|---|---|---|
| The official release date | November 20, 2025 | Both the Google launch post and Gemini API changelog point to that date |
| The official model name | Gemini 3 Pro Image Preview | That is the current Google developer-facing name |
| The API model ID | gemini-3-pro-image-preview | That is the string Google uses in the model page and API docs |
| Why some pages say Nov. 21 | Usually secondary-source or timezone drift | The official launch source itself is dated Nov. 20 |
What is the official Nano Banana Pro release date?
The strongest source trail starts with Google's own public launch materials, not with third-party summaries.
The official Google blog post for Nano Banana Pro is dated 20 Nov, 2025 and says Google is launching Nano Banana Pro (Gemini 3 Pro Image) that day. On the developer side, the Gemini API release notes have a separate November 20, 2025 entry that says Google released Gemini 3 Pro Image Preview, model ID gemini-3-pro-image-preview, as the next iteration to the Nano Banana model.
That two-source alignment matters. The blog post is the best reader-facing launch anchor. The changelog is the best developer-facing anchor. When both point to the same date, you do not need to guess based on generic review pages, directories, or wiki histories.
It also matters if you are refreshing an older comparison page or internal wiki. Many newer Nano Banana pages were written after the broader family story got more crowded, so they inherit later context by default. That does not change the original launch anchor. If a page does not show a direct path back to the Google launch post or Gemini API release notes, treat it as commentary, not as the canonical date source.
The cleanest way to think about it is:
- Public product launch date: November 20, 2025
- Official developer model name: Gemini 3 Pro Image Preview
- Official API model ID:
gemini-3-pro-image-preview
That is enough for most readers. If all you needed was the release date, you can stop there. Everything else in this article exists to explain why page one still makes that answer feel less obvious than it should.
| Timeline checkpoint | What happened | Why it matters for this keyword |
|---|---|---|
| August 2025 | Google publicly launched the original Nano Banana / Gemini 2.5 Flash Image line | This is the older family baseline that many pages still blend together |
| November 20, 2025 | Google launched Nano Banana Pro and released Gemini 3 Pro Image Preview | This is the actual answer to the release-date query |
| February 26, 2026 | Google DeepMind's model-card index shows Gemini 3.1 Flash Image updated, and current docs frame it as Nano Banana 2 | This later family milestone is a major source of timeline confusion |
| March 29, 2026 check | Google's live docs still map Nano Banana Pro to Gemini 3 Pro Image Preview | Confirms that the current official naming still points back to the November 2025 Pro launch |
Why do some pages say November 21, 2025 instead?
If you search broadly instead of going straight to Google's own pages, you will see at least three versions of the same answer:
- November 20, 2025
- November 21, 2025
- November 2025
The official date to trust is still November 20, 2025, because that is what appears on Google's own launch post and developer changelog. The alternative versions mostly come from secondary summarization.
The safest inference from the source trail is that November 21 is usually a downstream normalization problem, not a separate Google launch event. Some wiki-style pages and secondary aggregators likely convert the timing into a different local date, or they summarize the launch after the fact rather than preserving Google's original publication date. Others flatten it further into "November 2025" because that is easier to write in a directory or overview card.
That is exactly why the article should not stop at "November 2025." If you are publishing something other people will quote, you want the exact date attached to the official product name.
This is also why exact-match model directories can be useful but incomplete. A page like Galaxy.ai can show the release date in a clean fact card, which is good for quick scanning, but it does not explain why another page shows a different day. For a reader trying to avoid citation drift, the explanation is as important as the raw date.
If you publish for a global audience, the safest move is not to normalize the date forward just because some readers encountered coverage on November 21 in their local timezone. Preserve Google's source-side date, then mention the timezone or secondary-summary drift only if that distinction matters for your audience.
So if your sources disagree, use a simple rule:
- prefer the dated Google launch post over third-party summaries
- prefer the Gemini API changelog over generic review pages
- treat November 21 as secondary-source drift unless Google itself changes the date on the source pages
What Google calls Nano Banana Pro now
Today, Google usually answers this question through the Gemini naming layer rather than through the nickname alone.
The current image-generation guide says Nano Banana refers to three distinct models in the Gemini API:
- Nano Banana 2 = Gemini 3.1 Flash Image Preview
- Nano Banana Pro = Gemini 3 Pro Image Preview
- Nano Banana = Gemini 2.5 Flash Image
That means "Nano Banana Pro" is still a useful user-facing phrase, but the more stable technical label is Gemini 3 Pro Image Preview. If you are writing developer docs, product comparisons, or anything that involves code, the model ID matters more than the nickname.
That distinction is especially useful when updating cluster pages. If your headline is written for search users, keeping "Nano Banana Pro" is fine because that is the phrase people type. But if the page includes pricing, API calls, rate limits, or model selection logic, introduce Gemini 3 Pro Image Preview early and use gemini-3-pro-image-preview where precision matters. That keeps the page understandable for both general readers and developers.
| Name layer | Official wording | Where you usually see it |
|---|---|---|
| Nickname | Nano Banana Pro | consumer-facing discussion, launch messaging, general search queries |
| Model name | Gemini 3 Pro Image Preview | Gemini developer docs, model pages, API references |
| Model ID | gemini-3-pro-image-preview | code, SDK usage, request payloads, technical docs |
The live model page is useful here for one more reason: it still labels the model as Preview and says the latest update is November 2025. So if you are trying to write a technically precise sentence, "Nano Banana Pro" alone is not enough. The better wording is:
“Nano Banana Pro is Google's Gemini 3 Pro Image Preview model (
gemini-3-pro-image-preview), launched on November 20, 2025.
If you want the broader naming explanation without redoing it here, the best next read is Nano Banana Pro in Gemini: Official Model Name and How to Use It or the older cluster page Is Nano Banana Pro the Same as Gemini 3 Pro Image?.
Why Nano Banana 2 makes the timeline feel newer than it is
The reason this keyword stays messy in 2026 is not that the November 2025 launch became unclear. It is that the current product surface no longer looks like the same moment the launch post described.
Google's current image-generation docs present Nano Banana as a family, and Nano Banana 2 now gets a lot of attention because it is the high-efficiency Gemini image lane. Google's model-card index also shows Gemini 3.1 Flash Image updated on February 26, 2026, which is a later milestone than the original Pro launch.
On top of that, user discussions from February and March 2026 show people talking about Nano Banana 2 becoming the new default image mode in the app, or replacing what they expected to see as "Nano Banana." Once that happens, a searcher can easily misremember the whole family as if the "real" launch happened later.
But those are two different questions:
- When did Nano Banana Pro launch? November 20, 2025.
- When did Nano Banana 2 become the newer family reference point in current docs and user discussion? Later, with February 2026 as the important milestone in the official model-card trail.
That separation is the main value of this page. It is not enough to know the date. You also need to know which later change keeps muddying the memory of that date.
If you are trying to understand the family split itself, use Nano Banana vs Nano Banana Pro as the deeper comparison page. This release-date article should stay narrower than that.
Where Nano Banana Pro launched and how to cite it correctly
Google's launch post did more than introduce a name. It also showed where the model was rolling out at the time:
- Gemini app, when users selected Create images with the Thinking model
- Gemini API and Google AI Studio
- Vertex AI for enterprise use
- Google Ads, Workspace surfaces like Slides and Vids, NotebookLM, and Flow in launch-specific contexts
That rollout context helps explain why Nano Banana Pro became a visible search term so quickly. People encountered it in product UI, launch coverage, and developer docs at the same time, but not always under the same exact label.
If you are writing about it today, the safest wording depends on your use case:
Editorial or SEO copy
Use: "Nano Banana Pro launched publicly on November 20, 2025."
Developer or API documentation
Use: "Nano Banana Pro is Google's Gemini 3 Pro Image Preview model (gemini-3-pro-image-preview), released on November 20, 2025."
Buying notes or model-selection docs
Use: "Nano Banana Pro launched on November 20, 2025, but current Google docs place it inside a broader Nano Banana family that now also includes Nano Banana 2."
That last version is especially useful because it keeps you from writing outdated-sounding copy. You acknowledge the original launch date and the current family framing at the same time.
One practical rule is worth making explicit: never write as if Nano Banana Pro first appeared only after Nano Banana 2 became the newer default story. If your page is mainly about current access or current defaults, say that clearly. But keep the historical launch sentence separate so the reader does not mistake a 2026 surface change for the original Pro release.
That discipline matters because one wrong year or one wrong naming shortcut can spread quickly once comparison pages, AI directories, and autogenerated summaries start quoting each other instead of the source trail.
If your next question is not timeline but access, use Is Nano Banana Pro Free in 2026?. If your next question is model choice, move to the comparison page instead of trying to stretch a release-date article into a broader buyer's guide.
FAQ
Was Nano Banana Pro released on November 20 or November 21?
The official answer is November 20, 2025. Google's own launch post and Gemini API changelog both point to that date. When you see November 21, treat it as a secondary-source or timezone-shifted summary unless Google changes the original source pages.
Is Nano Banana Pro the same as Gemini 3 Pro Image Preview?
Yes. In current Google docs, Nano Banana Pro maps to Gemini 3 Pro Image Preview, and the API model ID is gemini-3-pro-image-preview.
Did Nano Banana 2 replace Nano Banana Pro?
No. Current Google docs list both models in the Nano Banana family. Nano Banana 2 is the Gemini 3.1 Flash Image Preview lane, while Nano Banana Pro is still the Gemini 3 Pro Image Preview lane.
Why does this query feel harder than it should?
Because page one mixes three different jobs:
- launch-history lookup
- current model-name lookup
- current product-surface complaints about Nano Banana 2
One clean answer has to separate those layers instead of flattening them into another generic Nano Banana guide.