# HiDream I1 Fast AI Image Generator

> The 16-step HiDream I1 checkpoint for fast open-model concepts without losing the family’s visual range.

Canonical URL: https://allimageai.com/models/hidream-i1-fast/

Website: All Image AI

Language: English

HiDream I1 Fast is the 16-step member of the 17B HiDream I1 foundation-model family. It keeps negative-prompt, step and seed control while cutting the default sampling workload far below the Full checkpoint.

## Model details

- Developer: HiDream.ai
- Status on All Image AI: Active
- Last verified: 2026-08-25
- Maximum output: 2K
- Modes: Text to Image
- Reference images: not supported
- Resolutions: 1K, 2K
- Aspect ratios: 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3

## Best for

- Fast open-model drafts
- Broad style exploration
- Illustration and photography concepts
- Fixed-seed comparisons

## How to use

1. Describe subject, light and medium.
2. Start at sixteen steps.
3. Compare several seeds at 1K.
4. Move demanding finals to HiDream I1 Full.

## Settings explained

### Steps

Sixteen is the documented Fast default; higher values trade latency for a diminishing detail gain.

### Negative Prompt

Remove visible defects without adding an unsupported guidance control.

## Prompt examples

### Editorial scene

> Sunlit ceramic studio, shelves of imperfect handmade vessels, dusty beams of light, quiet documentary photography

### Fantasy concept

> Ancient observatory growing from a giant tree canopy, brass instruments, blue hour mist, intricate storybook illustration

## Limitations

- Text-to-image only
- Fine detail trails HiDream I1 Full
- No guidance control on this exact endpoint

## Pricing and credits

Credits for one image at default quality and mode. Resolution, quality, reference inputs, edit mode and output count can change the total. Check the Generate button before submitting.

| Resolution | Credits / image |
| --- | --- |
| 1K | 1 |
| 2K | 3 |

Failed generations cost 0 credits. Catalog availability does not guarantee runtime availability; the workspace reports whether the selected model can run.

[Credit plans](https://allimageai.com/pricing.md)

## Test results

Testing in progress. No verified benchmark scores have been published for this model.

## Commercial use and image handling

Commercial use is subject to the HiDream model licence and the selected service terms.

Uploads are processed by the configured inference service. You can delete a generation from your history.

## Frequently asked questions

### How is Fast different from Full?

Fast uses a 16-step default for lower latency; Full exposes a slower 50-step workflow for final detail.

### Can it edit an image?

Not on this exact endpoint. HiDream O1 is the family option for reference-driven editing.

## Release history and sources

April 7, 2025 — Open weights released

This date applies to the event shown. Later API access, weights and availability on All Image AI may have different dates.

- [github.com](https://github.com/HiDream-ai/HiDream-I1)

[Event evidence on the timeline](https://allimageai.com/timeline/#event-hidream-i1-fast)

## Other versions

- [HiDream O1 Image](https://allimageai.com/models/hidream-o1-image.md): Multi-reference · 2K
- [HiDream I1 Full](https://allimageai.com/models/hidream-i1-full.md): Full quality · 2K