Nano Banana 2, Leak
According to the report of Zhidx on February 25th, in the past 48 hours, Nano Banana 2 has become a hot topic in the AI developer community. On the overseas social platform X, there have been endless posts about the upcoming release of Google's latest image generation model (also known as Preview version of Gemini 3.1 Flash Image). 4K images are spreading everywhere, and various speculations are rife.
A screenshot of speculations about Nano Banana 2 on social platform X
As is well known, Nano Banana Pro based on Gemini 3 Pro is almost "god - like" in the field of AI image generation. And Nano Banana (the nickname of Gemini 2.5 Flash Image) also caused a stir in the industry when it was released last year. If Nano Banana 2 is really released, to what extent will it be upgraded in terms of performance and price compared with Nano Banana Pro? This has attracted high - level attention from the industry.
According to mutual verification among multiple self - media accounts on platform X, Nano Banana 2 is the nickname of the preview version of Gemini 3.1 Flash Image, with features such as 4K image generation ability, faster speed, and lower price than Nano Banana Pro. On February 20th, Google released its new - generation flagship model, Gemini 3.1 Pro. Usually, Gemini 3.1 Flash and its image function are expected to be released in the near future.
TestingCatalog News is a self - media account with many followers in the AI field. In today's tweet, it said that Google is preparing for the upcoming release of the preview version of Gemini 3.1 Flash Image. The Nano Banana 2 (Flash) model based on Gemini 3 Flash was tested in December last year, but its release was postponed later. Maybe it will be released soon. It also posted a picture presumably generated by Nano Banana 2.
A post by a self - media account on social platform X
It quoted a tweet posted by another X user, MarsEverythingTech, on February 24th. In the tweet, the early test 4K generated images of Nano Banana 2 (Preview version of Gemini 3.1 Flash Image) were leaked. As shown in the following pictures, the four pictures seem to perform well in terms of detail generation and text rendering.
A post by a user on social platform X
Subsequently, a well - known developer named Legit posted a tweet saying that a new anonymous model anon - bob - 2 has been launched. It is very likely to be the new Nano Banana Flash model on Arena.ai (formerly LMArena), powered by Gemini 3.1 Flash Image. However, after Zhidx logged in to Arena.ai, this model was not found. Maybe the test version has been taken offline.
A post by a user on social platform X
He also provided evidence of finding the Gemini 3.1 Flash Image mirror on the website of Google Cloud's enterprise - level AI platform, Vertex AI. As shown in the following picture, after entering "Gemini - 3" and scrolling down the page, the name of the Gemini 3.1 Flash Image model appears.
A post by a user on social platform X
Another X user said: "Nano Banana 2 (Preview version of Gemini 3.1 Flash Image) has been active in the image battle mode of Arena.ai under the anonymous user 'anon - bob - 2'. One of the current achievements of the community: It's great!"
A post by a user on social platform X
If the leaked information is true, Nano Banana 2 may combine the advantages of the previous two generations of products: the speed and price advantages of the Flash series, and visual quality close to or better than that of Nano Banana Pro.
For example, the images it generates may have native 4K resolution, better multi - character scene processing ability, and more consistent detail performance in terms of human body structure, reflection, lighting, etc. According to testers, all these are achieved with lightning - fast generation speed, far exceeding the Pro version known for its slow speed.
According to the speculation of the Stable Diffusion blog, the internal test of (Nano Banana 2) originally scheduled for December 2025 was postponed due to quality calibration issues. Now the model is ready, and the image function may be released in the next few days or weeks.
As of press time, Google has not issued any official announcements on this.
Conclusion: Leading players are releasing new products intensively, the AI image generation competition may be upgraded
If the leaked information is true, Nano Banana 2 may be a model with ultra - high speed, supporting 4K image generation, having a lower price than the Nano Banana Pro version, but with comparable image quality. It is expected to trigger a new wave in the industry.
However, Nano Banana 2 may not be able to establish an absolute advantage. Recently, domestic models such as ByteDance's Seedream 5.0, Alibaba's Qwen - Image - 2.0, and Zhipu's GLM - Image have been released one after another, focusing on instruction following, image quality, text rendering, etc. Maybe they can all compete with Google's new image model, and the AI image generation competition will be upgraded again.
This article is from the WeChat official account "Zhidx" (ID: zhidxcom). Author: Li Shuiqing, Editor: Yun Peng. It is reprinted with permission by 36Kr.