--- title: Bytedance | Scenario Docs --- > This page is auto-generated from model configurations. Last updated: 2026-04-09. This reference lists all available **Bytedance** image generation models and their parameters. Use these parameter names when calling the [Generation API](/api/postgeneratecustom/index.md). - [Dreamina 3.1](#dreamina-31) - [Seedream 3](#seedream-3) - [Seedream 4.0 Edit](#seedream-40-edit) - [Seedream 4.5 Edit](#seedream-45-edit) - [Seedream 5.0 Lite](#seedream-50-lite) --- ## Dreamina 3.1 ByteDance’s creativity-focused model for stylized outputs. **Model ID:** `model_bytedance-dreamina-3-1` **Capabilities:** `txt2img` **LLM Markdown:** | Parameter | Type | Required | Default | Min | Max | Allowed Values | Description | | ------------- | ------ | -------- | ------- | --- | ---- | --------------------------------------------------------------------------- | ---------------------------------------------------------------------- | | `prompt` | string | Yes | - | - | - | - | Text prompt for image generation | | `aspectRatio` | string | No | `4:3` | - | - | `9:21`, `9:16`, `2:3`, `3:4`, `1:1`, `3:2`, `4:3`, `16:9`, `21:9`, `custom` | Image aspect ratio. Set to ‘custom’ to specify width and height. | | `resolution` | string | No | `2K` | - | - | `1K`, `2K` | Image resolution quality | | `width` | number | No | `1328` | 512 | 3024 | - | Image width (only used when aspect\_ratio is ‘custom’) | | `height` | number | No | `1328` | 512 | 3024 | - | Image height (only used when aspect\_ratio is ‘custom’) | | `seed` | number | No | - | - | - | - | Use a seed for reproducible results. Leave blank to use a random seed. | ## Seedream 3 Realism-driven image generator with strong lighting control. **Model ID:** `model_bytedance-seedream-3` **Capabilities:** `txt2img` **LLM Markdown:** | Parameter | Type | Required | Default | Min | Max | Allowed Values | Description | | --------- | ------ | -------- | ------- | --- | ---- | -------------- | --------------------------------------------------------------- | | `prompt` | string | Yes | - | - | - | - | Text prompt for image generation | | `width` | number | No | `2048` | 512 | 2048 | - | Image width | | `height` | number | No | `2048` | 512 | 2048 | - | Image height | | `seed` | number | No | - | - | - | - | Use a custom seed for targeted results (single-image inference) | ## Seedream 4.0 Edit **Model ID:** `model_bytedance-seedream-4-editing` **Capabilities:** `txt2img`, `img2img` **LLM Markdown:** | Parameter | Type | Required | Default | Min | Max | Allowed Values | Description | | --------------------------- | ----------- | -------- | ---------- | --- | --- | ----------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `referenceImages` | file\_array | No | “ | - | - | - | Input image(s) for image-to-image generation. List of 1-14 images for single or multi-reference generation. | | `prompt` | string | Yes | - | - | - | - | Text prompt for image generation | | `size` | string | No | `4K` | - | - | `4K`, `2K`, `1K` | Output resolution. 1K for low quality, 2K for medium quality, 4K for high quality. | | `aspectRatio` | string | No | `auto` | - | - | `1:1`, `4:3`, `3:4`, `16:9`, `9:16`, `3:2`, `2:3`, `21:9`, `auto` | Image aspect ratio. ‘Auto’ preserves the original aspect ratio but does not upscale image resolution. | | `sequentialImageGeneration` | string | No | `disabled` | - | - | `disabled`, `auto` | Off: always generates one image. On: The model may generate a set of related images (story steps, variations, or alternatives), up to your chosen Max Images parameter. | | `maxImages` | number | No | `1` | 1 | 15 | - | The maximum number of images the model can generate in one sequence. Total image count (input +generated) cannot exceed 15. | ## Seedream 4.5 Edit **Model ID:** `model_bytedance-seedream-4-5-editing` **Capabilities:** `txt2img`, `img2img` **LLM Markdown:** | Parameter | Type | Required | Default | Min | Max | Allowed Values | Description | | --------------------------- | ----------- | -------- | ---------- | --- | --- | ----------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `referenceImages` | file\_array | No | “ | - | - | - | Input image(s) for image-to-image generation. List of 1-10 images for single or multi-reference generation. | | `prompt` | string | Yes | - | - | - | - | Text prompt for image generation | | `size` | string | No | `4K` | - | - | `4K`, `2K` | Image resolution: 2K (2048px), 4K (4096px). | | `aspectRatio` | string | No | `auto` | - | - | `1:1`, `4:3`, `3:4`, `16:9`, `9:16`, `3:2`, `2:3`, `21:9`, `auto` | Image aspect ratio. ‘Auto’ preserves the original aspect ratio but does not upscale image resolution. | | `sequentialImageGeneration` | string | No | `disabled` | - | - | `disabled`, `auto` | Off: always generates one image. On: The model may generate a set of related images (story steps, variations, or alternatives), up to your chosen Max Images parameter. | | `maxImages` | number | No | `1` | 1 | 15 | - | The maximum number of images the model can generate in one sequence. Total image count (input + generated) cannot exceed 15. | ## Seedream 5.0 Lite **Model ID:** `model_bytedance-seedream-5-0-lite` **Capabilities:** `txt2img`, `img2img` **LLM Markdown:** | Parameter | Type | Required | Default | Min | Max | Allowed Values | Description | | --------------------------- | ----------- | -------- | ---------- | ---- | ---- | ------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `prompt` | string | Yes | - | - | - | - | Text prompt for image generation | | `referenceImages` | file\_array | No | “ | - | - | - | Input image(s) for image-to-image generation. | | `width` | number | No | `2048` | 1024 | 4704 | - | Custom image width (only used when size is set to ‘Custom’). Range: 1024-4096 pixels. | | `height` | number | No | `2048` | 1024 | 4096 | - | Custom image height (only used when size is set to ‘Custom’). Range: 1024-4096 pixels. | | `sequentialImageGeneration` | string | No | `disabled` | - | - | `disabled`, `auto` | Off: always generates one image. On: The model may generate a set of related images (story steps, variations, or alternatives), up to your chosen Max Images parameter. | | `maxImages` | number | No | `1` | 1 | 15 | - | The maximum number of images the model can generate in one sequence. Total image count (input + generated) cannot exceed 15. |