Nano Banana 2.1 — Specifications
Compiled by Mustafa Ihsan from the vendor’s published documentation · Last updated
| Developer | |
|---|---|
| Type | Image generation |
| Modality | Text, Image, Video, PDF -> Image, Text |
| Parameters | Undisclosed |
| Context window | 131K |
| Max output | 32K |
| License | Proprietary |
| Open weights | No |
| Released | 2026-10 |
| Price | from $0.0168 per image |
| API providers | Gemini API (paid tier), Google Cloud (Gemini Enterprise Agent Platform); Gemini app, Flow, Google Ads (apps) |
What is Nano Banana 2.1?
Nano Banana 2.1 (gemini-nano-banana-2.1) is Google’s current fast image generation and editing model, generally available since 6 October 2026. Google built it as an update to Nano Banana 2 (Gemini 3.1 Flash Image), and its model card says it is based on Gemini 3.6 Flash. Google lists better visual quality, text rendering and multi-turn character consistency, up to 14 reference images, search grounding and output at 1K, 2K or 4K. Besides the API, it runs in the Gemini app, Search AI Mode, Flow, Google Ads and Stitch.
In the Gemini API, a 1K image costs about $0.034 and a 4K image about $0.113. Google bills image output at $30 per million tokens: a 1K image (1024×1024) uses 1,120 tokens, or $0.0336, a 2K image 1,680 tokens ($0.0504) and a 4K image 3,780 tokens ($0.113). Input costs $1.50 per million tokens and text output $7.50. The Batch API halves every rate, to $0.0168 per 1K image. There is no free API tier, and Google Cloud’s Agent Platform charges the same standard rates.
Per 1K image, that is half the $0.067 Google charges for gemini-3.1-flash-image (Nano Banana 2), which Google has deprecated in favour of 2.1 without a shutdown date. At 4K the gap is smaller: $0.113 against $0.151. For using it in the Gemini app, see our Nano Banana guide, and compare it with other tools in our list of the best AI image generators.
Nano Banana 2.1 pricing
| Tier | Resolution | Price / image |
|---|---|---|
| Gemini API Batch | 1K | $0.02 |
| Gemini API Batch | 2K | $0.03 |
| Gemini API | 1K | $0.03 |
| Gemini API | 2K | $0.05 |
| Gemini API Batch | 4K | $0.06 |
| Gemini API | 4K | $0.11 |
Frequently asked questions
How much does Nano Banana 2.1 cost?
Nano Banana 2.1 costs between $0.02 and $0.11 per image of output, depending on tier. The cheapest is Gemini API Batch at $0.02 and the most expensive is Gemini API at $0.11.
Full per-second table for every provider in the AI video generation pricing guide. Prices are the provider published list rates and change without notice.