Gemini Nano Banana 2.1 is generally available for image creation and conversational editing
Gemini Nano Banana 2.1 is generally available. The update to Nano Banana 2 enables image generation and editing through conversation, supporting 1K, 2K and 4K resolutions as well as very wide and very tall formats.
According to the announcement in Gemini API Changelog, Gemini Nano Banana 2.1 became generally available on 6 October 2026 under the identifier gemini-nano-banana-2.1. It is used for image generation and editing through conversation. It is an update to Nano Banana 2, which uses the identifier gemini-3.1-flash-image.
The model supports aspect ratios of 1:4, 4:1, 1:8 and 8:1 at 1K, 2K and 4K resolutions. According to the company, it retains Flash-level speed and cost efficiency while significantly improving visual quality, instruction following, consistency of character appearance across subsequent edits, and text rendering. The announcement links to an image generation guide to help users get started.
Why it matters
Support for very wide and very tall formats expands the range of output options. Conversational editing allows users to progressively change a generated image with further instructions; better instruction following and consistency of character appearance are benefits claimed by the company.
Release card
Gemini Nano Banana 2.1
- Inputs
- The model generates images and enables conversational editing. It supports 1K, 2K and 4K resolutions and aspect ratios of 1:4, 4:1, 1:8 and 8:1.
- Availability
- The model is generally available in Gemini API under the identifier gemini-nano-banana-2.1.
- Enables image generation at 1K, 2K and 4K resolutions.
- Enables subsequent image edits through conversation.
- Supports the creation of very wide and very tall images.
The announcement presents the model as an update to Nano Banana 2 (gemini-3.1-flash-image). According to the announcement, it retains Flash-level speed and cost efficiency while improving visual quality, instruction following, consistency of character appearance across subsequent edits, and text rendering.
The card summarizes information from the article and any dated corrections, with a link to the original source. It is not our assessment of the model. It does not yet have a dedicated editorial profile. Model selection and other announcements →
Two audiences, two different impacts
What this means
For individuals
According to the company, the model should better preserve the appearance of a single character between steps when repeatedly editing an image.
For a business
The process of preparing company visuals can use aspect ratios up to 1:8 and 8:1 as well as 4K resolution for outputs with different format requirements.
Sales and marketingCheck the original
Event sources
clearly official source · 1 publisher, 0 independent. We count feeds from the same owner only once.