Googlegemini-3.1-flash-image
Gemini 3.1 Flash Image
Nano Banana 2 image generation with verified native Gemini transport and reported token usage.
Google names this model Gemini 3.1 Flash Image (Nano Banana 2). The current enabled workflow creates one image at the published 1K tier, with square, landscape or portrait composition. The gateway returns inline base64 image data and bills the supplier-reported aggregate input/output tokens. It is distinct from Gemini 3 Pro Image (Nano Banana Pro). Other native capabilities are available only after verified CMS configuration.
- Image generation
- Nano Banana 2
- Native Gemini transport
- Token metering
gemini-3.1-flash-image Enabled generation settings
These settings are maintained in the Allgate catalogue and describe this deployment’s enabled workflow.
- Number of images
n - 1–1 · Default: 1
- Composition
size - 1024x1024 / 1536x1024 / 1024x1536 · Default: 1024x1024
- Resolution tier
resolution - 1K · Default: 1K
- Output token budget
max_output_tokens - 4096–4096 · Default: 4096
- Response data
response_format - b64_json · Default: b64_json
Model access and billing
- What is Gemini 3.1 Flash Image on Allgate?
- This Image model from Google is listed in the Allgate public catalogue. Its API model ID is gemini-3.1-flash-image. Allgate supplies unified access and billing; the underlying model comes from a third-party provider.
- How much does Gemini 3.1 Flash Image cost?
- $0.45 input and $54 output, per million tokens. These are Allgate public catalogue base rates in USD. Account discounts are shown separately; check your applicable price before a request. Additional service modes or generation settings may have separate limits.
Input · Official $0.5 Save 10%
Output · Official $60 Save 10%
Official source and date
Paid Standard text/image input and image output tokens only; text/thinking output has a separate official rate.
Verified · USD
View official pricing source ↗ - Can I call this model now?
- The catalogue snapshot dated 2026-10-24 reports an available route. Availability can change. Check current routing, account access and prepaid balance before sending a request.
- How do I connect it?
- Create an Allgate API key, use the exact model ID gemini-3.1-flash-image, and consult the request reference for /v1/images/generations. Image and video workflows can also start in Studio. Keep the API key on your server.
API reference · Compare models and prices · Image and video Studio
