Seedream Flash
Fast Seedream: pictures up to 2K from a description or a photo — great for drafts.
Good for: quick versions, stories, simple edits
How to get a better result
"A ginger cat on a windowsill, rain outside, watercolor".
"Soft sunset", "neon light", "cozy, warm tones".
Refine the description and press "Another version" — every result is new.
Pass this model in the request seedream-flash
1. Create a task POST /api/v1/jobs/createTask
curl -X POST https://mixmedia.tech/api/v1/jobs/createTask \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: order-123" \
-d '{
"model": "seedream-flash",
"callBackUrl": "https://your-app.example/callback",
"input": {
"prompt": "A cyberpunk city at night, neon lights reflecting on wet streets",
"image_urls": [],
"aspect_ratio": "auto",
"resolution": "1.5K",
"output_format": "jpeg"
}
}'import time, requests
API = "https://mixmedia.tech/api/v1"
HEADERS = {"Authorization": "Bearer YOUR_API_KEY"}
task = requests.post(f"{API}/jobs/createTask", headers=HEADERS, json={
"model": "seedream-flash",
"callBackUrl": "https://your-app.example/callback",
"input": {
"prompt": "A cyberpunk city at night, neon lights reflecting on wet streets",
"image_urls": [],
"aspect_ratio": "auto",
"resolution": "1.5K",
"output_format": "jpeg"
}
}).json()
task_id = task["data"]["taskId"]
while True:
info = requests.get(f"{API}/jobs/recordInfo", headers=HEADERS, params={"taskId": task_id}).json()["data"]
if info["state"] in ("success", "fail"):
break
time.sleep(4)
print(info["state"], info.get("resultJson") or info.get("failMsg"))const API = "https://mixmedia.tech/api/v1";
const headers = { Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json" };
const { data } = await fetch(`${API}/jobs/createTask`, {
method: "POST", headers,
body: JSON.stringify({
"model": "seedream-flash",
"callBackUrl": "https://your-app.example/callback",
"input": {
"prompt": "A cyberpunk city at night, neon lights reflecting on wet streets",
"image_urls": [],
"aspect_ratio": "auto",
"resolution": "1.5K",
"output_format": "jpeg"
}
}),
}).then((r) => r.json());
let info;
do {
await new Promise((r) => setTimeout(r, 4000));
info = (await fetch(`${API}/jobs/recordInfo?taskId=${data.taskId}`, { headers }).then((r) => r.json())).data;
} while (!["success", "fail"].includes(info.state));
console.log(info.state, info.resultJson ?? info.failMsg);Response: data.taskId. callBackUrl and Idempotency-Key are optional.
2. Status and result GET /api/v1/jobs/recordInfo
curl "https://mixmedia.tech/api/v1/jobs/recordInfo?taskId=TASK_ID" \
-H "Authorization: Bearer YOUR_API_KEY"
data.state: waiting, queuing, generating, success, fail. On success data.resultJson is a JSON string with resultUrls.
3. Upload a file POST /api/v1/files/upload
curl -X POST https://mixmedia.tech/api/v1/files/upload \
-H "Authorization: Bearer YOUR_API_KEY" -F "file=@photo.jpg"
The response has data.url. Pass that URL in the file field. Any public https URL works too.
About the model
Seedream Flash is the fast Seedream 5.0 image model. 1K, 1.5K and 2K from a description or your photos (up to 10). Good for drafts and quick edits.
1.5K costs the same as 1K; 2K costs more.


