Stability AI

Stability AI 18,251 's Developer Platform bills in credits, where "1 credit = $0.01," with 25 free credits to start. Stable Image Ultra, built on Stable Diffusion 3.5 18,251 Large, costs 8 credits ($0.08); SD 3.5 Large 6.5, Large Turbo 4, Medium 3.5 and Flash 2.5; Stable Image Core, tuned for speed and cost, 3 ($0.03); and legacy SDXL 1.0 1,113 from 0.9. The same credits buy task endpoints that OpenAI 86 leaves to prompts: inpaint, erase, background removal, search-and-replace (5 credits each), sketch-guided generation (5), a 4K upscaler (60) and image-to-3D (Meshy and Other 3D Generators).

What sets Stability apart is that it also publishes open weights: you can prototype on the API and move a model to your own hardware (Running Open Models Locally), subject to its license.

Stability AI's credit prices (1 credit = $0.01) for its models and its task endpointsHTMLLive

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