What is Nano Banana 2 API
Nano Banana 2 API is a REST API that allows users to generate or edit images. It is powered by Google's Gemini 3.1 Flash Image model, offering Pro-level quality at Flash speed. It replaces the original Nano Banana and is designed to be faster and more affordable than Nano Banana Pro, while maintaining comparable quality.
How to use Nano Banana 2 API
To use the Nano Banana 2 API, you can make a POST /v2/images/generate request. This request requires your API key and can include parameters for the prompt, model, and specific Nano Banana parameters such as resolution, image input, output format, and grounding options. The API returns a jobId that can be used to poll for the job status, or you can provide a webhook_url to receive the result directly when it's ready. The API is accessible through Apiframe, as well as Google AI Studio, the Gemini API, and Vertex AI.
Features of Nano Banana 2 API
- High-Quality Image Generation: Produces images with Pro-level quality.
- Speed and Affordability: Approximately four times faster and half the cost of Nano Banana Pro.
- Up to 4K Resolution: Supports resolutions from 512px to 4096px across 14 aspect ratios.
- Search Grounding: Leverages real-time web search and Gemini's knowledge base for accurate rendering of specific subjects.
- Multi-Subject Consistency: Maintains consistency for multiple characters and objects across images.
- Multilingual Text Rendering: Supports accurate text rendering and translation in multiple languages.
- Flexible Reasoning: Offers minimal or high reasoning levels.
- Provenance: Outputs include an invisible SynthID watermark and C2PA Content Credentials.
- Unified API: Access Google's Nano Banana 2 model through one REST API with asynchronous jobs and webhooks.
- No Google Cloud Setup: Manage image generation without the need for direct Google Cloud configuration.
Use Cases of Nano Banana 2 API
- Everyday Generation and Editing: Suitable for general image creation and modifications due to its speed and cost-effectiveness.
- High-Volume Iterative Work: Ideal for scenarios requiring frequent image generation and rapid iteration.
- Infographics and Data Visualizations: Excels at creating accurate infographics, diagrams from notes, and data visualizations due to its grounding capabilities.
- Marketing and Advertising: Used for generating ad creatives and iterating on image variations quickly.
- Content Creation: Supports the creation of various visual assets for websites, social media, and print.
Pricing
Pricing is based on a per-generation model, with costs ranging from 12 credits (approximately $0.12) at 1K resolution to 26 credits (approximately $0.26) at 4K resolution. The exact cost depends on the chosen resolution and options. Users pay only for successful generations, with failed jobs being refunded. A single credit balance is used across all models on Apiframe, and volume discounts are available for larger plans. Free credits are provided to start, with no subscription required.
FAQ
- What is Nano Banana 2?
Google's Gemini 3.1 Flash Image, released in February 2026, offering Pro-level quality at Flash speed and replacing the original Nano Banana.
- How is it different from Nano Banana Pro?
It is approximately four times faster and about half the cost with comparable quality. Pro is recommended for the most demanding text and branding work.
- What resolution does it produce?
Up to 4K, with options ranging from 512px to 4096px and 14 aspect ratios.
- How fast and how affordable is it?
It generates images in about 4 to 6 seconds, costing between 12 credits ($0.12) at 1K and 26 credits ($0.26) at 4K per image, roughly half the price of Pro.
- How many subjects can it keep consistent?
It supports consistency for multiple characters and objects across images.
- Where can you access it?
Through Apiframe, the Gemini app, Google AI Studio, the Gemini API, and Vertex AI.
