HiDream O1 1.5 Image API for Pixel-Native Creation

The HiDream O1 1.5 Image API gives developers programmatic access to HiDream's unified image generation model through a single OpenAI-compatible endpoint on Atlas Cloud. Built on a pixel-level unified transformer, it delivers text-to-image, editing, and subject-driven personalization from one model instead of a stack of separate tools. Access is Day-0 with pay-as-you-go, transparent per-call pricing.

Beyond straightforward text-to-image generation, the model handles instruction-based editing, subject-driven personalization across multiple reference images, and accurate long-text rendering for posters and commercial graphics. Teams reach for it in e-commerce product visuals, advertising creative, and game art, where tight composition and legible on-image text both matter.

Yes. HiDream O1 1.5 was trained to interpret nuanced prompts in both Chinese and English, and it renders multilingual on-image text with strong accuracy. That makes it a practical fit for teams shipping localized visuals without switching between models.

You call the HiDream O1 1.5 Image API with one OpenAI-compatible key, so most existing SDKs work once you point them at the Atlas Cloud endpoint. Send a request with your prompt and any optional parameters to the hidream-o1-1.5/text-to-image model, then read back the generated image. No separate model hosting or GPU infrastructure is required on your side.

Prompts can run up to 2,500 characters, and you pick from preset sizes including square_hd at 1024x1024, square at 512x512, plus portrait and landscape options in 4:3 and 16:9. You can also tune num_inference_steps from 1 to 100 with a default of 50, set guidance_scale between 1.0 and 20.0 with a default of 5.0, and return PNG, JPEG, or WebP.

Pass a single URL in reference_image_urls to run instruction-based editing on an existing image, or supply multiple URLs to drive personalization that keeps a consistent subject across scenes. Leave the field empty for standard text-to-image generation. A dedicated hidream-o1-1.5/edit model is available for editing workflows at the same per-image rate.

The HiDream O1 1.5 Image API is priced at $0.044 per image on Atlas Cloud, and the text-to-image and edit models share that same rate. Billing is pay-as-you-go with transparent per-call pricing, so you pay only for the images you generate with no subscription. Start building today.

On Atlas Cloud you choose a preset size such as square_hd at 1024x1024, and the model synthesizes each image directly from raw pixels through its unified transformer rather than compressing into a latent space. Because detail and on-image text are generated instead of upscaled from a bottleneck, HiDream is known for clean typography and crisp edges in posters and product graphics.