# Stable Diffusion 3.5 Large Turbo AI Image Generator

> The four-step distilled SD 3.5 Large for fast, controllable open-model drafts.

Canonical URL: https://allimageai.com/models/stable-diffusion-3-5-large-turbo/

Website: All Image AI

Language: English

Stable Diffusion 3.5 Large Turbo distils the Large checkpoint into a four-step workflow. It keeps the familiar negative-prompt and seed controls while trading some surface detail for much faster iteration.

## Model details

- Developer: Stability 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
- Seeded prompt comparisons
- Stylised concepts
- Low-cost batches

## How to use

1. Write the positive prompt.
2. Add only concrete exclusions to Negative Prompt.
3. Fix the seed before tuning.
4. Generate at 1K first and use 2K selectively.

## Settings explained

### Negative Prompt

Explicitly lists defects, objects or styles that should not appear.

### Steps

Four is the intended default; extra steps have limited returns.

## Prompt examples

### Controlled illustration

> Ancient observatory above a cloud sea, midnight blue and brass, detailed storybook illustration, dramatic moonlight

Negative: watermark, blurry, duplicate objects.

### Product concept

> Minimal ceramic desk lamp, warm white glaze, pale grey studio sweep, soft directional shadow

## Limitations

- Less detail than the full Large model
- Text-to-image only here
- Four steps leave less room for fine tuning

## 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 | 2 |
| 2K | 5 |

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

Open weights under the Stability AI Community License; service use also follows the selected provider terms.

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

## Frequently asked questions

### Can I download the model weights here?

No. This is a hosted inference route; Stability AI distributes the open weights separately.

### Which SD 3.5 variant should I choose?

Choose Turbo for speed and Large for final detail and a wider sampling range.

## Release history and sources

October 22, 2024 — Open weights released

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

- [stability.ai](https://stability.ai/news-updates/introducing-stable-diffusion-3-5)

[Event evidence on the timeline](https://allimageai.com/timeline/#event-stable-diffusion-3-5-large-turbo)

## Other versions

- [Stable Diffusion 3.5 Large](https://allimageai.com/models/stable-diffusion-3-5-large.md): Full quality · 2K
- [Stable Diffusion 3.5 Medium](https://allimageai.com/models/stable-diffusion-3-5-medium.md): Negative prompt · 2K
- [Stable Diffusion 3 Medium](https://allimageai.com/models/stable-diffusion-3-medium.md): Open weights · 1K
- [Stable Image Ultra](https://allimageai.com/models/stable-image-ultra.md): Recommended · 2K