Practical overview
When it fits
Use the web app for prompt-led image creation or editing when you want to choose a style, aspect ratio and optional reference. Use the separate platform when you already have API access and need image generation.
Who it is for
- Creators making images for social media, presentations, banners or thumbnails.
- People who want to edit images or guide generation with a reference image.
- Developers who already have API access and want to generate images through the separate platform.
Documented uses
- Generate an image from a written prompt.
- Explore different visual styles and aspect ratios.
- Guide image generation with an uploaded reference.
- Use the separate platform for image generation with API access.
Requirements & limits
The project code is in a public GitHub repository under the Apache-2.0 license. The README describes a separate API platform for users with API access; it does not state hosted-service pricing or account requirements.
- The web app documents text prompts, style selection, aspect-ratio presets and optional reference uploads.
- The API-generation platform is described for people with API access; API endpoints and access setup are not detailed in the README.
- The Apache-2.0 license applies to the repository, not necessarily to hosted-service access or pricing.
Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.
Generate an image in the web app
Create a prompted image with a selected style and aspect ratio, optionally guided by a reference image.
Before you start
- Access to the web app
- A text prompt
- An optional reference image
Steps
Choose a model and preferred style.
Enter a clear description of the image.
Select an aspect ratio.
Optionally upload a reference image, then select Generate.
Expected outcome
The README says the generated result appears in a preview area or notifications panel.
Guide limitations
- The README does not specify account requirements or the app's current pricing.
- The guide describes the web app workflow, not API setup or integration.
Sources & review
Source record details
- Source availability
- Active
- Sources checked
- 17 October 2026
- Original website title
- GeminiGenAI/Free-Nano-Banana-Pro-API-Ultimate-AI-Image-Generator · Official homepage title · retained in its source language

