Stable Image (Stability AI)

Stable Image is a suit of image generation and transformation tools developed by Stability AI, accessible through direct web interfaces and developer REST APIs. Operating on underlying open-weight architectures like Stable Diffusion 3.5 and specialized commercial pipelines like Stable Image Core and Ultra, the platform allows users to transform text descriptions into photorealistic artwork, render high-speed visual drafts, and execute precision image edits in cloud environments.

The suite provides flagship generation models such as Stable Image Ultra for high-fidelity photorealism, Stable Image Core for fast volume production, and various Stable Diffusion 3.5 architectures. Beyond text-to-image creation, it includes advanced editing services like object erasure, background removal, inpainting, outpainting, search-and-replace capabilities, and 4K creative upscaling tools.

Developers can integrate Stable Image capabilities into mobile apps, web services, and automation pipelines using Stability AI's REST API endpoints or cloud integrations on platforms like Amazon Bedrock. The platform offers simple authentication, predictable JSON request structures, asynchronous job polling, and native integration parameters for prompt control, aspect ratio formatting, and image masking.

Stability AI operates on a pay-as-you-go credit system where users purchase credits (typically 1 credit = $0.01) to run various API tasks, receiving trial credits upon account setup. Each task consumes a set number of credits depending on computational demands, such as 3 credits for Stable Image Core or 8 credits for Stable Image Ultra. Images produced using paid API credits or under active commercial membership tier agreements carry commercial usage rights for business applications, client deliverables, and software deployment.