Seedream 5.0 Flash Image Edit API

bytedance/seedream-v5.0-flash/edit
1K / 1.5K / 2K · 4 credits · $0.020

Seedream 5.0 Flash Image Edit combines 1 to 10 reference images with a prompt to create new work at up to 2K resolution. It closely preserves faces, clothing and composition from the source images while naturally transforming their style.

Input
1091 / 5,000

Drag and drop files, paste from clipboard, or provide a URL. Edit requires 1–10 images. File uploads accept JPEG, PNG or WebP, up to 30MiB each; these are uploader limits.

2/10 files added

OutputReady
4 credits × $0.005 = $0.020

Continue with

Examples

edit-02-output

Restore and naturally colorize this archival community orchestra photograph. Preserve exactly the same three people, facial identities, expressions, hair, glasses, body positions, hands, fingers, violin, bow, accordion, baton, music stands, window, wall, floor and framing. Do not move, add, remove or redesign anything. Remove only the thin surface scratches and faded photographic cast. Introduce believable restrained colors: the left violinist has a muted teal cardigan, the center accordionist a warm brown jacket, the right conductor a burgundy blouse; realistic skin tones, honey-colored wooden floor and violin, dark charcoal accordion with ivory keys, pale warm plaster wall. Soft daylight still enters from the existing left window; preserve its shadow directions and the original documentary character. Keep fine authentic film grain while recovering readable facial and instrument detail, without plastic skin or artificial oversharpening. No new lettering, brands, advertising, logos or watermarks.

edit-03-output

Expand this vertical wildlife photograph into a realistic ultrawide 21:9 panorama by extending the sandstone canyon to the left and right. Preserve the exact same single red fox, its identity, upright pose, head direction, ear shapes, white chest, black legs, rust-red fur and curled white-tipped tail, and preserve the ledge immediately beneath it. Do not crop, stretch, duplicate or redesign the fox. Keep it near the central third at a natural scale and extend the broad ledge continuously outward, revealing eroded sandstone layers and a gently receding canyon opening on the far left. Add only geological surroundings and sparse dry grasses that match the source. Maintain the original warm light from the upper right, matching rock strata, perspective, color and leftward shadows seamlessly. Natural photographic realism and fine fur detail. No additional animals, people, structures, signs, writing, logos, advertising or watermarks.

Seedream 5.0 Flash Image Edit

Seedream 5.0 Flash Image Edit is an efficient model developed by ByteDance for editing with multiple reference images, designed for commercial retouching and character design. Built on a multimodal diffusion architecture, it accepts up to 10 reference images and completes face fusion and background replacement in approximately 30 seconds while preserving subject contours and texture, making it ideal for image editing at scale.

Why Choose Seedream 5.0 Flash Image Edit?

  • Combine up to 10 reference imagesSubmit 1 to 10 reference images together to combine faces, specific outfits, backgrounds and artistic styles, making complex compositions from multiple source assets easy to create.

  • Preserve subjects and details with high fidelityRebuild backgrounds and lighting while closely preserving facial features, clothing textures and product contours from the source image, avoiding distorted faces and products.

  • No extra charge for multiple referencesWhether you use 1 reference image or the full 10, each request costs a fixed 4 credits ($0.020). Make detailed edits in large batches without worrying about escalating costs.

  • Fast iteration in approximately 30 secondsMedian editing time stays between 27 and 31 seconds, enabling designers to make adjustments with immediate feedback and improving efficiency for commercial image reconstruction and batch product launches.

  • Flexible native aspect ratios and 2K outputChoose from 8 output aspect ratios, including 1:1, 16:9 and 9:16, at up to 2K resolution. Recompose images seamlessly for detailed printing and large-screen displays.

Parameters

ParameterRequirementDescription
promptRequired

Non-blank text, up to 5,000 Unicode characters.

image_urlsRequired

1–10 ordered HTTP(S) image URLs without embedded credentials.

sizeOptional

Output aspect ratio.

Default1:14:33:416:99:162:33:221:9
resolutionOptional

Output resolution; all tiers have the same price.

Default1K1.5K2K
output_formatOptional

When omitted, the model selects the format.

jpegpng
enable_safety_checkerOptional

Enable content safety checking.

Defaulttruefalse

How to Use

  1. Upload reference imagesUpload 1 to 10 JPEG, PNG or WebP reference images in Image Urls, with each file no larger than 30MB. References can include people, clothing or scenes.

  2. Describe your editing goalIn Prompt, describe the elements you want to change, such as the background or clothing color, and specify subject features that must remain unchanged, such as the face and hairstyle.

  3. Set the output aspect ratio and resolutionChoose an aspect ratio suited to your publishing channel from the 8 supported options, then select 1K, 1.5K or 2K resolution for the level of detail you need.

  4. Confirm the cost and click RunConfirm the fixed charge of 4 credits ($0.020), then click Run in the action bar to start the multimodal image editing task.

  5. Review the result and refine your editPreview the composite in the output panel when generation finishes. To refine lighting or details, keep your settings, adjust the prompt and run it again.

Pricing

One image per request, fixed at 4 credits ($0.020). 1 credit = $0.005.

UsageRateDetails
1K4 credits / image$0.020 / image
1.5K4 credits / image$0.020 / image
2K4 credits / image$0.020 / image

Best Use Cases

  • Replace plain product backgroundsUpload an original product image as a reference, then use a prompt to replace a plain background with a living room, marble countertop or outdoor setting while keeping product lighting and texture realistic.

  • Model portraits and virtual outfit try-onsUpload a model portrait and images of the desired clothing items. Multiple references enable natural clothing transfer and outfit compositing, significantly reducing the cost of physical try-on shoots.

  • Redraw consistent characters from new viewpointsUse multiple reference images of the same character to generate new poses, outfits and story scenes while keeping facial features and hairstyles fully consistent.

  • Rework old photos and sketchesUse a hand-drawn sketch or blurry image as a reference, then describe richer lighting and material textures in the prompt to transform it into a sharp 2K commercial illustration.

Pro Tips

  • Explain the role of each reference image in the prompt. For example: "Combine the face from the first image with the evening gown from the second image, set against the banks of the Seine at night."
  • When preserving a subject, explicitly state what must stay the same as well as what should change. For example: "Keep the model's original brown curls and facial proportions exactly the same."
  • Choose well-lit reference images with clear, prominent subjects. Avoid heavily compressed images or references with severe noise.
  • Every resolution tier costs the same. For complex multi-image composites, choose 2K directly for finer edge blending and hair detail.
  • If you only want to adjust the background, describe its depth-of-field blur and the direction of ambient light in detail so the subject blends naturally into the new setting.

Notes

  • Seedream 5.0 Flash Image Edit requires 1 to 10 valid image URLs. Requests without reference images are not supported.
  • Each request costs a fixed 4 credits ($0.020), regardless of the number of reference images (1 to 10) or resolution (1K to 2K).
  • The Flash variant focuses on fast, affordable multi-image compositing. It does not offer the Layer Decomposition output available in Seedream 5.0 Pro.
  • Each uploaded reference image can be up to 30MB. JPEG, PNG and WebP are supported; ensure that image links are publicly accessible.

Related Models

Seedream 5.0 Flash Image Edit API Frequently Asked Questions

What is the Seedream 5.0 Flash Image Edit API?

Seedream 5.0 Flash Image Edit is a high-performance image editing model developed by ByteDance that works with multiple references. It combines 1 to 10 reference images with a text prompt to precisely merge subjects, replace product backgrounds and transform styles in approximately 30 seconds, with output at up to 2K resolution. Its advanced multimodal diffusion architecture closely preserves facial features, composition and texture details from the inputs while introducing natural lighting in a new environment. Call it programmatically through the API or try it directly in the playground above.

How many reference images can I upload to Seedream 5.0 Flash Image Edit?

Each task accepts 1 to 10 reference images. Supported file formats are JPEG, PNG and WebP, with a maximum size of 30MB per image. You can combine images of people, clothing, props and scenes to reconstruct a composition from multiple elements.

Does uploading more reference images increase the cost of Seedream 5.0 Flash Image Edit?

No. Seedream 5.0 Flash Image Edit uses a fixed rate. Whether you submit 1 reference image or 10, each task at 1K, 1.5K or 2K resolution costs 4 credits ($0.020), making it cost-effective for commercial batch use.

How does Seedream 5.0 Flash Image Edit maintain consistent faces and subjects?

The model has strong multimodal feature alignment capabilities. For the most stable consistency, explicitly ask the prompt to "preserve the facial features, hairstyle and body shape of the subject in the reference image", and describe changes only to the background, clothing or specific accessories.

Does Seedream 5.0 Flash Image Edit support layer decomposition and export?

No. Layer decomposition and export of separate transparent layers are advanced features exclusive to Seedream 5.0 Pro. Flash focuses on fast responses, high-throughput multi-image compositing and targeted whole-image edits, meeting large-scale creative rendering needs at a more affordable rate.

How do I use Seedream 5.0 Flash Image Edit to replace an e-commerce product background?

First, upload a clear product image in Image Urls. Then describe the environment in Prompt, for example: "Place the perfume on a light marble bathroom countertop in morning sunlight, with soft depth of field." Add "preserve the bottle label and appearance completely" to create a commercial product image with naturally blended lighting.

Is the output aspect ratio in Seedream 5.0 Flash Image Edit limited by the original image dimensions?

No. The output is not locked to the original dimensions. The endpoint offers 8 standard aspect ratios, including 1:1, 16:9, 9:16 and 4:3. The model intelligently recomposes the image and fills in the surrounding environment for your selected ratio while positioning the main subject from the references appropriately in the center.