Nano Banana 2
gemini-3.1-flash-image-preview-cGoogle Gemini 3.1 Flash Image 系列图像生成与编辑模型的常用名称，支持文字提示和参考图像。
- Starting price
- Per Request
- Context
- —
- Maximum input window
- Modalities
- →
Pricing by Supplier
Capabilities / Supported modalities
Provider & data privacy
BPE (vendor-specific)Performance
Benchmarks
Scores on standardized evaluations. Higher percentages are better — and rank percentile shows
Metrics sourced fromArtificial Analysis 2026-09-30·Nano Banana 2
This model is not included in the current benchmark snapshot.
Missing models or measurements are not zero scores.
Benchmark charts preserve the source model selection and reasoning settings. Missing models or measurements are not zero scores, and benchmark cost or speed is not this site’s service commitment.
About Nano Banana 2
Google Gemini 3.1 Flash Image 系列图像生成与编辑模型的常用名称，支持文字提示和参考图像。
Use cases and prompting
Starting points for evaluation; supported inputs and options are listed in API access.
Use cases to explore
- Explore product visuals, campaign concepts and illustration drafts.
- Compare composition and visual style across several prompt variations.
Practical tips
Specify the subject, composition, lighting and style. Only include reference images or editing parameters when the endpoint supports them.
Example prompt
A minimalist product photograph of a ceramic cup on pale stone, soft window light, ample empty space on the right, warm neutral colors.
API access
Code samples
/v1/images/generations| Parameter | Type | Default / range | Description |
|---|---|---|---|
promptrequired | string | — | Text description of the desired image |
size | enum | = 1024x1024 | Output image size |
quality | enum | = standard | Generation quality preset |
style | enum | = vivid | Aesthetic style |
n | integer | = 11 ~ 10 | Number of images to generate |
response_format | enum | = url | How to deliver the resulting image |
Replace <YOUR_API_KEY> with the API key from your token settings.
Authentication
All requests must include Authorization: Bearer <TOKEN> header. Anthropic-formatted endpoints accept the x-api-key header instead.
Generate tokens from the Tokens page; you can scope them to specific models, groups, IPs, and rate-limits.
Supported parameters
| Parameter | Type | Default / range | Description |
|---|---|---|---|
promptrequired | string | — | Text description of the desired image |
size | enum | = 1024x1024 | Output image size |
quality | enum | = standard | Generation quality preset |
style | enum | = vivid | Aesthetic style |
n | integer | = 11 ~ 10 | Number of images to generate |
response_format | enum | = url | How to deliver the resulting image |
Rate limits
| Supplier | RPM | TPM | RPD |
|---|---|---|---|
| 标准按次 | Unlimited | Unlimited | Unlimited |
No restriction
Frequently asked questions about nano-banana-2
What is nano-banana-2?
Google Gemini 3.1 Flash Image 系列图像生成与编辑模型的常用名称，支持文字提示和参考图像。
How do I call nano-banana-2?
Create an API key with access to nano-banana-2, then use the exact model ID and a supported endpoint from the API access section. Request fields depend on the selected endpoint.
How is nano-banana-2 priced?
Pricing depends on the selected provider group and the model billing unit. The current input, output, request, or media prices are shown on this page before sign-up.
How should I evaluate nano-banana-2 for my project?
Specify the subject, composition, lighting and style. Only include reference images or editing parameters when the endpoint supports them.