Seedance 2.5 is live — 30-second cinematic video with native audio & real-person references

Seedream 5.0 Lite API — 2K & 3K Doubao Image Generation

Seedream 5.0 Lite is ByteDance Doubao's lean image generation model. Render at 2K or 3K, send reference images for image-to-image, and batch up to four variations per call — all through reApi's unified endpoint.

Highlights
2K / 3K · up to 4 per request · sequential sets
Best for
Story sets, consistent characters, covers
Input
Text, plus reference images
Output
Up to 4 images (jpeg / png)
Input

Free text · required · detailed prompts produce better results

Nine ratios from 1:1 to 21:9 — auto matches your reference image

2K for fast iteration · 3K for hero / print work

1–4 images per request · n>1 auto-enables group mode

0/16 files

Public HTTPS URLs · jpeg or png · ≤ 10 MB each

jpeg for size · png for transparency

disabled · auto — upstream auto-promotes to auto when count > 1

Only meaningful when sequential mode is auto

Off by default

Result

Try one of these prompts

What is the Seedream 5.0 Lite API?

Seedream 5.0 Lite is ByteDance's lean image model, exposed on reAPI as one async endpoint covering text-to-image and image-to-image through reference URLs. Each request picks 2K or 3K resolution and one of nine aspect ratio options including auto, and returns 1 to 4 images as JPEG or PNG — with sequential generation available for batched sets — billed per image.

Seedream 5.0 Lite sample renders at 2K and 3K

What you can build with this model

Real-world workflows and production use cases you can build and ship with this model.

Seedream 5.0 Lite hero shot at 3K

Render hero shots at 2K and 3K

Seedream 5.0 Lite renders at 2K or 3K — sharp enough for the homepage hero, the product card, the campaign banner. Describe the shot, set resolution to 3K when the asset goes to print or a retina display, and the file lands in seconds. The same prompt template that drafted at 2K scales to 3K without recomposition, so a Seedream 5.0 Lite hero shot stays visually consistent across deployment surfaces.

Render at 3K
Seedream 5.0 Lite four-variation batch output

Batch four variations per call

Set n to 4 and Seedream 5.0 Lite returns four variations in one request. The upstream auto-enables group mode under the hood, so you spend one API call and get a row of options to A/B in product reviews — no scripting an outer loop, no extra polling, one task ID covers the batch. Useful for moodboards, product card variants, and creative review.

Seedream 5.0 Lite image-to-image fusion

Image-to-image with multiple references

Pass references in image_urls — product cutouts, environment plates, mood frames — and Seedream 5.0 Lite fuses them into one composition. All references are public HTTPS URLs (upload to your own R2 / S3 / OSS first). At 3K the texture detail holds up under print zoom; at 2K the file is light enough for ad-network creative pipelines.

Pricing

Credit-based — 1 credit = $0.001 USD. Pay only for completed generations.

First test cost
$0.03131 credits

One sample at the cheapest tier (1 image).

Testing budget guide
Add credits
$10
≈ 324 tests
$50
≈ 1623 tests
$100
≈ 3246 tests
ModelCategoryPrice
Per image2K
$0.031
31 credits · 1 image
3K
$0.031
31 credits · 1 image

Why reAPI

2K and 3K from one endpoint

Seedream 5.0 Lite covers a sharp two-tier resolution ladder. Send doubao-seedream-5-0-lite to /api/v1/images/generations with the resolution field set to 2K or 3K — same JSON shape across both. No client-side branching, no separate model id for higher detail.

Credits in, image out — no surprises

1 credit equals $0.001 USD. Seedream 5.0 Lite charges a flat per-image rate at 2K and 3K, so estimating cost is a single-multiply on the n parameter. The estimator on this page costs your exact configuration before submit, and the Seedream 5.0 Lite charge in the dashboard equals what you saw at request time.

Async-first for production stacks

Submit a Seedream 5.0 Lite task, get a task_id back, poll until done. Failed and moderated requests are not charged. Drop Seedream 5.0 Lite into the same task plumbing you use for every other reApi model — the lifecycle is identical, the JSON shape matches the OpenAI image-generations contract.

Integrate Seedream 5.0 Lite in three steps

  1. step 01

    Create an API key

    Sign up at reApi and grab a key. Free signup credits cover dozens of Seedream 5.0 Lite generations, enough to ship the first 2K hero or campaign asset before topping up.

    Open
  2. step 02

    Submit a generation

    POST to /api/v1/images/generations with model: doubao-seedream-5-0-lite, a prompt, and optional size / resolution / n. Seedream 5.0 Lite returns a task_id immediately — your handler is free to move on.

    Open
  3. step 03

    Poll the result

    GET /api/v1/tasks/:id until status is completed. The Seedream 5.0 Lite response carries image URLs valid for 72 hours; mirror to your own storage if you need them longer.

    Open
docs/api/seedream-5-0-lite

API reference

Drop-in code and the full parameter table.

View full reference
curl -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-lite",
    "prompt": "a kitten yawning into the camera, cinematic warm tones",
    "size": "16:9",
    "resolution": "2K"
  }'

Parameter validation failed

Rejected synchronously with the failing field named. Check enum values, ranges, and URL fields — nothing is charged.

Authentication or balance issue

401 means a missing or invalid Bearer key; 402 means the reserve exceeds your balance. Manage keys and credits in the console.

Content or material rejected

Reference material and outputs pass automated moderation. Rejected tasks fail with a clear error and a full refund.

Task failed or timed out

A task that reaches a failed state is never charged — the reserve refunds automatically. Keep the task id and retry when ready.

Frequently asked questions

Common questions about this model.

Seedream 5.0 Lite is ByteDance Doubao's lean image generation model. It renders at 2K or 3K across nine aspect ratios, accepts reference images for image-to-image fusion, and supports batch generation up to four variations per call. On reApi it ships as model id doubao-seedream-5-0-lite on the unified /api/v1/images/generations endpoint.

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Try Seedream 5.0 LiteView API Docs