Seedream 5.0 Flash is ByteDance's Seedream image model at one flat price per image. Generate at 1K, 1.5K or 2K, edit exactly where you point, and split any picture into editable layers — all from one async images endpoint.
≤ 32000 chars
auto · ratio · 1K / 1.5K / 2K · WIDTHxHEIGHT
1K · 1.5K · 2K
Up to 10 · public URLs
Always 1
needs exactly 1 reference image
opaque · transparent
jpeg · png
standard
Off by default
Always on in Playground. API users can disable it with content_filter=false.
Try one of these prompts
Credit-based — 1 credit = $0.001 USD. Pay only for completed generations.
One sample at the cheapest tier (1 image).
Seedream 5.0 Flash is ByteDance's Seedream 5.0 image model at a single per-image price. One model id covers text-to-image, multi-reference fusion with up to ten images, coordinate and sketch-mark editing, transparent-background edits and layer decomposition. Each request returns one image at 1K, 1.5K or 2K, and the price does not change with the tier.
Real-world workflows and production use cases you can build and ship with this model.
Seedream 5.0 Flash writes clean headlines and captions straight into the image, in English, Chinese and fourteen more languages including Japanese, Korean, Arabic and Thai. Ask for a poster, a menu or a banner and get the lettering back legible, not garbled.
Try a poster prompt
Mark the spot with a point or bounding-box coordinate in the prompt, or send a photo with hand-drawn marks, and Seedream 5.0 Flash changes only that region. Move a product between two images, add an object to a sketched area, or swap an outfit from a second reference.
Turn on layer decomposition and Seedream 5.0 Flash returns a base image plus up to 16 transparent PNG layers, each with its name and position. Re-edit one layer on its own, then stack them back by z-index in Figma or Photoshop.
Seedream 5.0 Flash costs the same at 1K, 1.5K and 2K, with no extra charge for reference images. 1 credit equals $0.001, and the exact rate is in the pricing table on this page.
Seedream 5.0 Flash covers text-to-image, multi-reference fusion with up to ten images, coordinate and sketch-mark editing, transparent-background edits and layer decomposition on a single model id.
Submit to the images endpoint and reAPI returns a task_id. Poll the task until it finishes and read the result from output.image_urls. A 1K image takes about 90 seconds and 2K about 160, so poll every 5–10 seconds. Failed tasks are refunded automatically.
Both models share the Seedream 5.0 toolkit. Seedream 5.0 Flash trades Pro's tiered pricing for one flat rate and adds a few size options.
Comparison reflects the documented parameters of both models on reAPI at the time of writing and may change.
Sign up and create a key in the dashboard. New accounts get a small test credit for their first Seedream 5.0 Flash images.
OpenSend a prompt to /api/v1/images/generations with the model set to doubao-seedream-5-0-flash. Pick a resolution and a size, and add reference images when you need them.
OpenreAPI returns a task_id. Poll GET /api/v1/tasks/:id until it is completed, then download the image from output.image_urls.
Opencurl -X POST https://reapi.ai/api/v1/images/generations \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "doubao-seedream-5-0-flash",
"prompt": "A coffee shop poster titled SLOW MORNINGS",
"resolution": "1.5K",
"size": "3:4"
}'Rejected synchronously with the failing field named. Check enum values, ranges, and URL fields — nothing is charged.
401 means a missing or invalid Bearer key; 402 means the reserve exceeds your balance. Manage keys and credits in the console.
Reference material and outputs pass automated moderation. Rejected tasks fail with a clear error and a full refund.
A task that reaches a failed state is never charged — the reserve refunds automatically. Keep the task id and retry when ready.
Common questions about this model.
Try it in the playground or grab an API key to integrate now.
