GoogleNano Banana
Nano Banana 2.1
Nano Banana 2.1 is the stable October 2026 image generation and conversational editing API.
What the release provides
The model accepts text, images, video and PDFs and returns images and text. Google describes improvements to prompt adherence and character consistency across multiple editing turns.Nano Banana 2.1 official API documentation
How to use it well
Practical guidance. Keep an approved reference and describe one concrete edit at a time. Inspect identity, composition and small details after each change. Save the accepted image as a separate asset so later conversation turns do not replace the version that the product uses.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | API |
| Model identifiers | gemini-nano-banana-2.1 |
| Context window | 131,072 tokens API input limit; reserve output capacity where the service shares one window. Nano Banana 2.1 official API documentation |
| Maximum output | 32,768 tokens Published API output limit; request settings can be lower. Nano Banana 2.1 official API documentation |