Image
Nano Banana 2.1
Nano Banana 2.1 by Google generates one to four images from a text prompt at 1K, 2K or 4K resolution.
- Text to image
- Image editing
Catalog preview.
Technical details
Supported inputs
google/nano-banana-2.1
| Input | Type | Requirement | Options and limits |
|---|---|---|---|
prompt | Text | Required | Min. characters: 3 · Max. characters: 50000 |
aspect_ratio | Text | Optional | auto, 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16, 4:1, 1:4, 8:1, 1:8 |
num_images | Whole number | Optional | ≥ 1 · ≤ 4 |
output_format | Text | Optional | jpeg, png, webp |
resolution | Text | Optional | 1K, 2K, 4K |
safety_tolerance | Text | Optional | — |
seed | Whole number | Optional | — |
system_prompt | Text | Optional | Max. characters: 50000 |
thinking_level | Text | Optional | — |
Other modes and their inputs
Image editinggoogle/nano-banana-2.1/edit
Supported inputs
google/nano-banana-2.1/edit
| Input | Type | Requirement | Options and limits |
|---|---|---|---|
image_urls | List | Required | Min. items: 1 · Max. items: 14 |
prompt | Text | Required | Min. characters: 3 · Max. characters: 50000 |
aspect_ratio | Text | Optional | auto, 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16, 4:1, 1:4, 8:1, 1:8 |
num_images | Whole number | Optional | ≥ 1 · ≤ 4 |
output_format | Text | Optional | jpeg, png, webp |
resolution | Text | Optional | 1K, 2K, 4K |
safety_tolerance | Text | Optional | — |
seed | Whole number | Optional | — |
system_prompt | Text | Optional | Max. characters: 50000 |
thinking_level | Text | Optional | — |