Nano Banana 2 is a highly anticipated artificial intelligence image generation model developed by Google, serving as the successor to the original Nano Banana model. While the first Nano Banana model gained viral traction due to its placeholder name, Nano Banana 2 similarly went viral following a brief, unscheduled preview on the Media IO platform from November 8-9, 2025, before being subsequently removed. Internally, the model is referred to as Gempix 2, and there are indications that Google may release multiple variants, including a Nano Banana Pro model. Its underlying architecture is speculated to be based on Gemini 2.5 Flash, Gemini 3.0 Pro, or Imagen 4.

The core methodology distinguishing Nano Banana 2 from its predecessors and contemporaries is a novel multi-step generation workflow. This process involves the model dedicating significant computational resources to planning the desired output prior to image synthesis. Following this planning phase, the model generates an initial image. Crucially, it then employs built-in image analysis to meticulously review the generated content, identifying and correcting errors. This iterative refinement loop allows the model to iterate as many times as necessary to achieve high fidelity and accuracy before delivering the final, refined result to the user. This iterative corrective mechanism aims to significantly enhance image accuracy and address limitations observed in previous models.

Nano Banana 2 introduces several substantial improvements over its predecessor:

• Enhanced Text Rendering: It exhibits exceptional capabilities in rendering textual elements accurately within generated images, correcting a common weakness in prior image generation models.
• Complex Content Generation: It excels at generating complex content such as infographics, charts, and content requiring world knowledge and internationalization (i18n) support.
• Instruction Following: The model demonstrates robust adherence to detailed user instructions.
• Technical Specifications: It supports 2K resolution images and multiple aspect ratios.
• Advanced Control: Offers precise coloring and sophisticated control over viewing angles and perspectives.

During its brief public preview, Nano Banana 2 showcased remarkable capabilities, including:

• Accurately rendering specific times on clocks and specified liquid levels in containers from text prompts (e.g., "11:15 on the clock and a wine glass filled to the top").
• Generating highly realistic operating system screenshots (e.g., Windows 11 desktop with Google Chrome open showing a YouTube thumbnail), complete with perfectly rendered text and UI elements.
• Demonstrating an apparent capacity for reasoning before generation, as evidenced by its ability to produce mock political election results (e.g., 2027 U.S. presidential election outcomes with correct percentages, raw totals, and difference values for specific candidates like Trump).

However, the preview also revealed that the model, particularly in its leaked "uncensored, slightly older checkpoint" version, appeared to lack some safety guardrails. Testers were able to generate content involving celebrities and political figures, suggesting that the version released for official public access might include stricter content moderation and censorship.