What Is Nano Banana 3 Pro? Gempix 3 Pro
Daniel Okonkwo
Senior ML Engineer
TLDRGoogle's unreleased image model, codenamed Gempix 3 Pro and reportedly built on Gemini 4 Argon. Still in training, tentative Nov–Dec 2026 window.
Meet Nano Banana 3 Pro, the Gemini 4 Argon Image Model Codenamed Gempix 3 Pro
Nano Banana 3 Pro is an unreleased Google image-generation model, reportedly built on Gemini 4 and carrying the internal codename Gempix 3 Pro. It first surfaced through third-party leaks on October 12, 2026, and has not been officially announced by Google. Early reports place it still in training, with a tentative November–December 2026 release window that the leakers themselves call subject to change. Nothing about its specifications, pricing, or access method is confirmed.
Key Takeaways
- Nano Banana 3 Pro is unreleased. It surfaced via leaks on October 12, 2026, and Google has not confirmed it exists.
- Its reported codename is Gempix 3 Pro. Google used "Gempix 2" internally for Nano Banana 2 Pro, so the pattern fits.
- It is reportedly based on Gemini 4, with several accounts specifying Gemini 4 Pro, sometimes called Argon.
- A November–December 2026 window is cited by multiple reports, all describing the timing as tentative.
- No specs, pricing, benchmarks, or access path are confirmed. The model is described as still in training.
- It extends the Nano Banana lineage, which already includes Nano Banana Pro (Gemini 3 Pro Image).
What Is Nano Banana 3 Pro?
Nano Banana 3 Pro is the expected next flagship in Google's Nano Banana line of image-generation and editing models. The name appeared on October 12, 2026 in a cluster of leak posts, led by a report from AI-news account TestingCatalog that Google was "preparing Nano Banana 3 Pro, based on the Gemini 4 model."
The lineage is established. The current flagship, Nano Banana Pro, is Google DeepMind's production image model, served as "Gemini 3 Pro Image." Nano Banana 3 Pro is reported to be its successor, moving the foundation from Gemini 3 to Gemini 4. One leak summary described the internal model as gempix_3_pro, "based on Gemini 4 Argon," and "still in training."
The status matters. As of this writing, every claim about Nano Banana 3 Pro comes from leakers, not from Google. No post we reviewed reports a hands-on test, a benchmark, a demo, or any form of user access. This is a page about a model that is talked about, not yet tried.
Nano Banana 3 Pro at a Glance
| Attribute | Detail |
|---|---|
| Developer | Google / Google DeepMind (reported) |
| Internal codename | Gempix 3 Pro (reported) |
| Type | Image generation and editing model |
| Base model | Gemini 4, reportedly Gemini 4 Pro / "Argon" (unconfirmed) |
| Modality | Text-to-image, image-to-image (expected, based on lineage) |
| Status | In training, unreleased |
| Expected availability | November–December 2026 (tentative, unconfirmed) |
| Context window | Not yet confirmed |
| Pricing | Not yet confirmed |
| License | Not yet confirmed (proprietary expected) |
How Nano Banana 3 Pro Works / What Makes It Different
The clearest technical signal is the codename. Gempix 3 Pro is the reported internal reference, and the "Gempix" convention is not new: Google used Gempix 2 for Nano Banana 2 Pro. Following that pattern, Gempix 3 Pro maps cleanly onto Nano Banana 3 Pro.
The second signal is the foundation. Reports consistently say the model sits on Gemini 4, and several specify Gemini 4 Pro, sometimes tied to the "Argon" label. The Argon connection is explicitly flagged as uncertain by the people making the claim. Our earlier look at Gemini 4 Argon covers what that base model is reported to bring; if Nano Banana 3 Pro inherits from it, the image model would ride a substantially newer backbone than today's Gemini 3 Pro Image.
A third detail comes from Google's own plumbing. According to the TestingCatalog report, Gempix 3 Pro was added to Google's Image Citation functionality — the recitation system that detects when a generated image closely matches an existing reference (including Shutterstock or Pinterest content) and blocks the output. Google's API already documents an IMAGE_RECITATION finish reason for exactly this behavior. Adding Gempix 3 Pro to that pipeline suggests the model is being wired into Google's existing content-protection mechanisms, which is the kind of back-end integration that tends to precede a release.
Nano Banana 3 Pro is reportedly the first Nano Banana model built on Gemini 4, carrying the internal codename Gempix 3 Pro and still in training as of October 2026.
What it will actually do better than Nano Banana Pro is unknown. The leaks promise "substantial improvements to image generation and editing" without numbers. Treat that as expectation, not specification.
What You Can Do With Nano Banana 3 Pro
No one outside Google can do anything with Nano Banana 3 Pro yet. The useful baseline is its predecessor, since Nano Banana 3 Pro is expected to extend the same capabilities.
Nano Banana Pro (Gemini 3 Pro Image) today handles:
- World knowledge: generating accurate real-world images by tapping Google Search's knowledge base.
- Text and translation: clean in-image text rendering, with detection and translation across 10 languages.
- Studio controls: blending up to 14 reference images, adjusting angle and focus, color grading, and native 4K output.
- Character consistency: keeping a subject stable across a series of edits, and turning sketches or blueprints into finished visuals.
Community use of the current model spans manga colorization, educational diagrams, step-by-step math visualizations, and game-style screenshots. Our breakdown of Nano Banana 2.5, Google's image model walks through where that lineage already leads on world-knowledge prompts. If Nano Banana 3 Pro ships, expect the same task set with the Gemini 4 base behind it.
How Nano Banana 3 Pro Compares
The most useful comparison is internal: Nano Banana 3 Pro against the model it would replace.
| Nano Banana Pro (current) | Nano Banana 3 Pro (reported) | |
|---|---|---|
| Base model | Gemini 3 Pro Image | Gemini 4 (reported) |
| Internal codename | Gempix 2 lineage | Gempix 3 Pro |
| Max resolution | Native 4K | Not yet confirmed |
| Pricing | ~$0.134 (1K/2K), ~$0.24 (4K) per image | Not yet confirmed |
| Status | Released, in production | In training, unreleased |
The one firm takeaway: Nano Banana 3 Pro is a generation ahead on its reported base model, and nothing else about the gap is quantified yet.
Availability: How to Access Nano Banana 3 Pro
There is no public access to Nano Banana 3 Pro. It is not in the Gemini app, not in Google AI Studio, and not exposed through any API. The table below separates what you can use today from what you cannot.
| Route | Status | Detail |
|---|---|---|
| Google Gemini app | Not available | NB3P not present; Nano Banana Pro ships to Pro subscribers and above |
| Google AI Studio / Gemini API | Not available | NB3P not present; served under a pay-per-image model for current models |
| kie.ai API | Nano Banana lineage available | kie.ai offers the earlier NanoBanana (Gemini 2.5 Flash Image) via API today; NB3P not yet hosted anywhere |
| Third-party platforms | Not available | No legitimate access exists ahead of release |
For builders who want to prototype on the Nano Banana family now rather than wait, kie.ai offers the earlier NanoBanana (Gemini 2.5 Flash Image Preview) through a single REST endpoint. When Nano Banana 3 Pro is officially released, its access routes will be added here. Until then, any site claiming to sell Nano Banana 3 Pro API calls is not serving the real model.
What We Don't Know Yet
The open questions outnumber the answers. Based on available reports:
- Official confirmation. Google has not acknowledged the model, the codename, or the plan.
- Exact base model. "Gemini 4," "Gemini 4 Pro," and "Argon" all appear; the relationship between them is unresolved.
- Release date. The November–December 2026 window is explicitly tentative.
- The codename itself. Both "Gempix" and the more specific
gempix_3_proappear in leak posts. - Everything measurable. No confirmed specs, pricing, benchmarks, resolution, context window, or launch markets.
Frequently Asked Questions
Is Nano Banana 3 Pro released yet?
Nano Banana 3 Pro is not released yet. As of October 13, 2026, it is an unreleased Google image model, first surfaced through third-party leaks on October 12, 2026 and reportedly still in training.
What is Nano Banana 3 Pro based on?
Nano Banana 3 Pro is reportedly based on Gemini 4, with several leak accounts specifying Gemini 4 Pro, sometimes identified as Argon. Google has not confirmed the foundation model, and the Argon link is called uncertain by the people reporting it.
What is Gempix 3 Pro?
Gempix 3 Pro is the reported internal codename for Nano Banana 3 Pro. Google previously used the Gempix 2 designation internally for Nano Banana 2 Pro, so Gempix 3 Pro follows the same naming pattern.
When will Nano Banana 3 Pro come out?
Nano Banana 3 Pro has a tentative November–December 2026 release window according to early leaks. That timing is described as unconfirmed and subject to change, and Google has announced no date.
How much will Nano Banana 3 Pro cost?
Nano Banana 3 Pro pricing is not yet confirmed. For reference, its predecessor Nano Banana Pro is priced around $0.134 per 1K/2K image and $0.24 per 4K image on some platforms.
Is Nano Banana 3 Pro the same as Gemini 4?
Nano Banana 3 Pro is not the same as Gemini 4. It is reportedly a separate image-generation model built on the Gemini 4 base, following the pattern where Nano Banana Pro ran as a model distinct from Gemini 3 Pro.
Can I use Nano Banana 3 Pro right now?
You cannot use Nano Banana 3 Pro right now. It has no public access via the Gemini app, Google AI Studio, or any API. The earlier Nano Banana lineage is available through Google's products and selected third-party APIs.
What to Watch Next
Three signals will tell you this is becoming real. First, an official Google post or model card naming Nano Banana 3 Pro or confirming the Gemini 4 base — the point at which the hedging on this page gets replaced with specs. Second, a gemini-4 image model ID appearing in Google AI Studio or the Gemini API, which is how the predecessor showed up. Third, the first hands-on outputs with verifiable resolution, text-rendering, and pricing numbers. This page will be updated as each lands.
Try related models on Kie.ai: NanoBanana-Gemini 2.5 Flash Image Preview, Nano Banana Pro and Nano Banana 2.
About Daniel Okonkwo
Daniel writes about inference systems, model architecture, and what new releases actually change for builders.
View all posts by Daniel Okonkwo