How does Seedream 5.0 Lite pricing work?

Credit-based: 1 credit equals $0.001 USD. Seedream 5.0 Lite runs a flat per-image rate at 2K and 3K — multiply by the n parameter (1–4) to size a batch. The estimator on this page mirrors the actual charge, and failed Seedream 5.0 Lite tasks are refunded automatically.

What aspect ratios does Seedream 5.0 Lite support?

Nine ratios via the size field: 1:1, 4:3, 3:4, 16:9, 9:16, 3:2, 2:3, 21:9, and auto. The auto value matches the aspect ratio of your first reference image — useful when restyling a product photo without re-cropping. Note that 9:21 is not supported on Seedream 5.0 Lite.

Does Seedream 5.0 Lite support image-to-image?

Yes. Pass URLs in image_urls and Seedream 5.0 Lite switches to reference-driven generation. Combine subject, scene, and style references in one prompt. URLs must be public HTTPS (no base64 or data: URIs); upload to your own R2 / S3 / OSS first. Each reference must be jpeg or png, ≤ 10 MB, with an aspect ratio in [1/3, 3].

How do I generate a series of related images?

Set n to 2, 3, or 4 and Seedream 5.0 Lite auto-enables group mode upstream. One API call, one task_id, multiple consistent images returned together. Power users can also pass sequential_image_generation: "auto" and sequential_image_generation_options.max_images explicitly — the auto-promotion under n>1 is the most common path.

What's the difference between 2K and 3K on Seedream 5.0 Lite?

2K renders at sizes like 2048×2048 (1:1) or 2848×1600 (16:9). 3K renders at sizes like 3072×3072 (1:1) or 4096×2304 (16:9). Both 2K and 3K share the same per-image rate on Seedream 5.0 Lite, so pick by deployment surface — 2K for ad creative, 3K for hero / print.

Can Seedream 5.0 Lite output PNG with transparency?

Yes. Set output_format to png and Seedream 5.0 Lite returns PNG files instead of JPEG. PNG is the right call when you need transparency (for compositing into another scene); JPEG keeps file sizes small for general use.

Where is the full Seedream 5.0 Lite API reference?

The complete parameter list, validation rules, error codes, and runnable examples for Seedream 5.0 Lite live at /docs/seedream-5-0-lite.

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 OpenAI-compatible endpoint.

Input

Prompt*

Free text · required · detailed prompts produce better results

Size

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

Resolution

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

Count

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

Reference images

Drag images here or click to upload

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

Output format

jpeg for size · png for transparency

Sequential mode

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

Max images

Only meaningful when sequential mode is auto

Watermark

Off by default

Result

Try one of these prompts

What you can build with this model

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

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.

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.

Category	Unit	Price
Per image
2K	1 image	$0.031 31 credits
3K	1 image	$0.031 31 credits

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

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
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
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

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 OpenAI-compatible /api/v1/images/generations endpoint.

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Try Seedream 5.0 Lite View API Docs

What you can build with this model

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