Models/bytedance/seedream-5-lite

Seedream 5 Lite

prospolabs/seedream-5-lite

ByteDance's reasoning-based image model with chain-of-thought before generation. Generate from text or compose up to 10 reference images per edit. $0.014 per image — the cheapest reasoning image model on the web.

ByteDanceImage to ImageCommercial useCheapesttext-to-imageimage-to-imagereference

Up to 60% off

Starts from

$0.014/ image

Retail $0.035

Pay-as-you-go — no subscription, no tokens.

Call the Seedream 5 Lite API on Prospolabs with a single POST to /v1/generate using model id seedream-5-lite and a mode field (one of: generate, edit). The API and the playground share the same USD price — $0.014 per image — 60% off market (cheapest reasoning image model on the web). Each call returns a generation_id and an output_url valid for 7 days, and failed runs are auto-refunded.

Quickstart

Send a POST request to /v1/generate with your API key. The model id is seedream-5-lite and a mode field selecting which input shape you're sending..

Create an image from a text prompt.

curl -X POST "https://api.prospolabs.com/v1/generate" \
  -H "Authorization: Bearer $PROSPOLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
        "model": "seedream-5-lite",
        "mode": "generate",
        "prompt": "Minimalist product photo of a ceramic coffee mug, soft light",
        "aspect_ratio": "16:9",
        "size": "2K",
        "num_images": 1,
        "seed": 0
      }'

Backed by fal-ai/bytedance/seedream/v5/lite/text-to-image.

Supported parameters for Generate

Parameter	Type	Default	Notes
mode	string	generate	Required. One of: generate, edit.
prompt	string	—	Required.
aspect_ratio	string	16:9	One of: auto, 1:1, 4:3, 3:4, 16:9, 9:16, 3:2, 2:3, 21:9.
size	string	2K	One of: 2K, 3K.
num_images	number	1	Range: 1–6.
seed	number	—

Response

{
  "generation_id": "gen_abc123",
  "status": "completed",
  "model": "seedream-5-lite",
  "mode": "generate",
  "estimated_cost_usd": 0.60,
  "output_url": "https://cdn.prospolabs.com/...",
  "duration_ms": 2143
}

Output retention: output_url is valid for 7 days after generation. After that, requests return HTTP 410 Gone with { "code": "output_expired" }. Download anything you want to keep.