HiDream O1 Dev

HiDream O1 Dev is a distilled image foundation model that unifies text-to-image generation, instruction-based editing, and subject-driven personalization. Its pixel-level unified architecture processes text, raw image content, and task conditions together for consistent in-context visual creation.

One endpoint covers three workflows: send no reference images to create from text, one image to apply an instructed edit, or multiple images to carry subjects into a new scene. This is the O1 Dev model, distinct from the earlier HiDream I1 family.

Highlights

• One model, three workflows. Moves between text-to-image generation, single-image instruction editing, and multi-reference personalization according to the supplied references.
• Pixel-level unified generation. Treats text, image pixels, and task conditions in a shared token space instead of separating generation and editing into unrelated systems.
• Subject-driven personalization. Uses multiple references to preserve a person, character, product, or visual identity while placing it in a newly described setting.
• Long-text rendering and layout control. Creates multi-region compositions with accurate multilingual text, supporting information-dense posters, editorial layouts, and designed graphics.

Pricing

When to Use

Prompt Guide

Match the prompt to the reference count. With no images, fully describe the scene. With one image, state exactly what should change and what must remain. With multiple images, identify the shared subject and describe the new setting, pose, camera, and identity details to preserve.

{
  "prompt": "Use the referenced ceramic mug as the exact product identity. Place it on a pale stone café table beside an open sketchbook, soft morning window light from the left, eye-level product photography, shallow depth of field. Preserve the mug's shape, glaze color, handle, and printed emblem.",
  "images": [
    "https://example.com/references/mug-front.png",
    "https://example.com/references/mug-side.png"
  ],
  "aspect_ratio": "4:3",
  "output_format": "png",
  "seed": 42
}

Technical Specs

Related

• HiDream O1 — Full O1 generation model
• HiDream O1 Dev Edit — Dedicated editing route for the Dev variant