# ByteDance Seedream 5.0 Pro Fast Text to Image API

> Seedream 5.0 Pro Fast text-to-image service provided through Kie.ai, with 1K and 2K quality tiers and flexible aspect ratios.

Source: https://www.sandbase.ai/models/bytedance/seedream/5.0/pro/fast
API reference: https://www.sandbase.ai/models/bytedance/seedream/5.0/pro/fast#api

## Facts

- Provider: ByteDance
- Type: Image model
- Model ID: `bytedance/seedream/5.0/pro/fast`
- Price: From $0.04 per run
- Capabilities: text to image
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

- Unified Run API: `POST https://api.sandbase.ai/v1/run`

```bash
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "bytedance/seedream/5.0/pro/fast",
  "prompt": "A cinematic product photograph with dramatic studio lighting",
  "quality": "basic",
  "aspect_ratio": "1:1"
}'
```

The response returns a run id; poll `GET https://api.sandbase.ai/v1/run/{id}` until the status is `completed` or `failed`.

## FAQ

### How do I call ByteDance Seedream 5.0 Pro Fast Text to Image through SandBase?

Create a SandBase API key, then send requests with the model ID "bytedance/seedream/5.0/pro/fast" to Unified Run API (/v1/run) at https://api.sandbase.ai. The request examples on this page show the exact payload.

### Do I need a separate ByteDance account?

No. One SandBase API key and balance gives you access to ByteDance Seedream 5.0 Pro Fast Text to Image and the other models in the catalog; you do not need to sign up with ByteDance separately.

## README

### Bytedance Seedream 5.0 Pro Fast

Bytedance Seedream 5.0 Pro Fast is built for fast professional image generation with selectable quality for different production stages. It gives creative and production teams a focused way to move from an approved brief or source asset to a reviewable result without fragmenting the job across unrelated tools. The model is most valuable when visual intent, brand suitability, and downstream usability all matter, because its output can enter an editorial, campaign, product, or content pipeline as a purposeful asset rather than an isolated experiment.

In practice, teams can use Bytedance Seedream 5.0 Pro Fast during a structured cycle of briefing, generation, comparison, and refinement. Establish the subject, audience, visual objective, and acceptance criteria first; prepare any reference media at suitable quality; then evaluate alternatives for composition, continuity, realism, and communication value before delivery. This workflow keeps creative judgment central while making repeated production easier to review, reproduce, and scale for the specific bytedance/seedream/5.0/pro/fast task.

#### Highlights

**Rapid professional rendering.** Rapid professional rendering gives bytedance › seedream › 5.0 › pro › fast a recognizable technical advantage: reviewers can assess this property directly in the generated asset instead of inferring it from request mechanics.

**Strong prompt adherence.** bytedance › seedream › 5.0 › pro › fast applies strong prompt adherence to the visual or temporal result itself, helping artists make a meaningful quality decision during selection and refinement.

**Typography-aware composition.** For bytedance › seedream › 5.0 › pro › fast, typography-aware composition supports coherent assets across the intended creative workflow and distinguishes this capability from a simple format or delivery option.

**Selectable standard or high quality.** The practical value of selectable standard or high quality is visible in the finished media from bytedance › seedream › 5.0 › pro › fast, where it supports repeatable art direction rather than merely exposing another request setting.

#### Pricing

| Quality | Price |
|---|---:|
| Basic | $0.045000 |
| High | $0.090000 |

#### When to Use

| ✅ Good fit | ❌ Consider alternatives |
|---|---|
| Use it when fast professional image generation with selectable quality for different production stages is the central production goal | Choose a different model when the required media task is fundamentally different |
| The team needs several reviewable creative alternatives | Exact deterministic reproduction is mandatory |
| Visual quality and practical downstream use both matter | Editable source layers or native project files are required |
| A managed generation step fits the delivery workflow | A live frame-by-frame interactive editor is essential |
| The documented inputs cover the available source assets | Required source media or controls fall outside the documented fields |

#### Prompt Guide

State the intended result first, then describe the subject, environment, action, visual treatment, and delivery constraints. Keep instructions concrete, avoid conflicting directions, and change one creative variable at a time when comparing outputs. For source-driven work, describe what should remain recognizable as clearly as what should change.

```json
{
  "prompt": "A cinematic product photograph with dramatic studio lighting",
  "quality": "basic",
  "aspect_ratio": "1:1"
}
```

#### Technical Specs

| Property | Details |
|---|---|
| `prompt` | **Type / options:** string<br>**Required:** Yes<br>**Description:** The text prompt used to generate the image. |
| `quality` | **Type / options:** string · basic / high<br>**Required:** Yes<br>**Description:** Output quality tier: basic produces 1K images and high produces 2K images. |
| `aspect_ratio` | **Type / options:** string · 1:1 / 4:3 / 3:4 / 16:9 / 9:16 / 2:3 / 3:2 / 21:9<br>**Required:** Yes<br>**Description:** The aspect ratio of the generated image. |

#### Related Models

- `bytedance/dreamactor/2.0`
- `bytedance/lynx`
- `bytedance/omnihuman/1.0`