ImgAPI

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One pay-per-image API for several leading image generation models

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ImgAPI

What it is

ImgAPI is an image generation API that puts several popular third-party models behind one key and one request format. Developers send a prompt of up to 10,000 characters, optional reference images, and settings for aspect ratio, resolution up to 4K, and quality, then poll an asynchronous task for the result. Billing is per successful image, and credits for failed tasks are released, with published per-image prices and 24-hour success rates for each model. A browser playground allows comparing models side by side and offers three free images a day without signing up, and paid accounts can check in daily for bonus credits. Documentation and model comparisons are available in English and Chinese.

Key features

Single API for multiple image models
Pay only for successful images
Up to 12 reference images per request
Public per-model success rates

What we liked

+ Transparent per-image pricing
+ Free daily playground with no signup
+ Easy side-by-side model comparison

Worth noting

· Depends on third-party models it does not control
· Async polling adds integration steps

Editor's notes

More context from AI BirdView

This service is a practical choice for developers who do not want to manage separate accounts and request formats for every image model they test. It offers one key, one task-based workflow, and clear per-image pricing, plus a public view of each model's recent success rate, which is a thoughtful touch when reliability matters.

One API key covers several image models, so switching models is a parameter change rather than a new integration.
Billing applies only to successful images, and credits for failed tasks are released.
Requests support long prompts, up to 12 reference images, and resolutions up to 4K on supported models.
A model status page shows prices and 24-hour success rates for each option.
The browser playground gives three free images a day without an account and allows multi-model comparison.

It is best for app builders, agencies, and hobbyist developers who want to add image generation without committing to a single model vendor. A practical tip: run the same prompt across two or three models in the free playground first, then pick the cheapest model that meets your quality bar for production traffic.