alibaba/qwen-image-2.1-pro/text-to-imageÀ partir de 6 crédits par image· Créer une imageQwen Image 2.1 Pro est le palier Pro hébergé de Qwen Image 2.1 d’Alibaba, proposé sous forme d’API et non de poids ouverts.
Appelez-le avec le nom de modèle alibaba/qwen-image-2.1-pro/text-to-image sur POST /jobs/createTask, à partir de 6 crédits par image (0,06 $US). Les nouveaux comptes reçoivent 30 crédits gratuits pour l’essayer d’abord dans le Playground.
- Créer une image
- Modifier une image
- Jusqu’à 2K
- Jusqu’à 10 images de référence
- 15 formats d’image
- Jusqu’à 6 par génération
alibaba/qwen-image-2.1-pro/text-to-imagePOST https://api.popnow.ai/api/v1/jobs/createTask# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
curl -X POST https://api.popnow.ai/api/v1/jobs/createTask \
-H "Authorization: Bearer $POPNOW_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: $IDEMPOTENCY_KEY" \
-d '{
"model": "alibaba/qwen-image-2.1-pro/text-to-image",
"input": {
"prompt": "A ceramic teapot on a linen cloth, soft window light, muted palette",
"aspect_ratio": "1:1",
"resolution": "2k",
"num_outputs": 1
}
}'
# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
-H "Authorization: Bearer $POPNOW_API_KEY"// Node 18+ (or any runtime with fetch). Keep the API key on your server.
const BASE = "https://api.popnow.ai/api/v1";
const headers = { Authorization: `Bearer ${process.env.POPNOW_API_KEY}` };
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
async function call(path, init = {}) {
const res = await fetch(BASE + path, { ...init, headers: { ...headers, ...init.headers } });
const body = await res.json();
if (body.code !== 200) throw new Error(`${body.code} ${body.msg}`);
return body.data;
}
const { taskId } = await call("/jobs/createTask", {
method: "POST",
headers: { "Content-Type": "application/json", "Idempotency-Key": crypto.randomUUID() },
body: JSON.stringify({
"model": "alibaba/qwen-image-2.1-pro/text-to-image",
"input": {
"prompt": "A ceramic teapot on a linen cloth, soft window light, muted palette",
"aspect_ratio": "1:1",
"resolution": "2k",
"num_outputs": 1
}
}),
});
// Poll with backoff. A finished task may still be copying files: wait while an asset is pending.
let task;
for (let delay = 2000; ; delay = Math.min(delay * 1.5, 15000)) {
await sleep(delay);
task = await call(`/jobs/recordInfo?taskId=${taskId}`);
const copying = (task.output?.assets ?? []).some((a) => a.pending && !a.unavailable);
if (["succeeded", "failed", "canceled", "expired"].includes(task.state) && !copying) break;
}
if (task.state !== "succeeded") throw new Error(`${task.state}: ${task.errorMessage ?? "no detail"}`);
// Each asset has a signed url (no API key needed) that expires at expiresAt: save the file.
for (const asset of task.output.assets) console.log(asset.url);import os, time, uuid, requests
BASE = "https://api.popnow.ai/api/v1"
HEADERS = {"Authorization": f"Bearer {os.environ['POPNOW_API_KEY']}"}
def call(method, path, **kwargs):
body = requests.request(method, BASE + path, headers={**HEADERS, **kwargs.pop("headers", {})}, timeout=30, **kwargs).json()
if body["code"] != 200:
raise RuntimeError(f'{body["code"]} {body["msg"]}')
return body["data"]
task_id = call(
"POST",
"/jobs/createTask",
headers={"Idempotency-Key": str(uuid.uuid4())}, # reuse it if you retry
json={
"model": "alibaba/qwen-image-2.1-pro/text-to-image",
"input": {
"prompt": "A ceramic teapot on a linen cloth, soft window light, muted palette",
"aspect_ratio": "1:1",
"resolution": "2k",
"num_outputs": 1
}
},
)["taskId"]
# Poll with backoff. A finished task may still be copying files: wait while an asset is pending.
delay = 2.0
while True:
time.sleep(delay)
task = call("GET", "/jobs/recordInfo", params={"taskId": task_id})
assets = (task.get("output") or {}).get("assets") or []
copying = any(a.get("pending") and not a.get("unavailable") for a in assets)
if task["state"] in ("succeeded", "failed", "canceled", "expired") and not copying:
break
delay = min(delay * 1.5, 15.0)
if task["state"] != "succeeded":
raise RuntimeError(f'{task["state"]}: {task.get("errorMessage", "no detail")}')
# Each asset has a signed url (no API key needed) that expires at expiresAt: save the file.
for asset in assets:
print(asset["url"])L’input est construit à partir du schéma ci-dessous : il passe la validation tel quel. Remplacez le prompt et les liens par les vôtres.
Prix
| Option | Crédits par image | ≈ USD |
|---|---|---|
| Standard | 5,4 | 0,054 $US |
1 crédit = 0,01 $ · Toutes les options et leur prix : GET /models/alibaba/qwen-image-2.1-pro/text-to-image
Chaque tâche est arrondie au crédit entier supérieur : une exécution au palier le plus bas coûte donc 6 crédits par image (0,06 $US).
Limites
- Résolutions
- 1K · 1.5K · 2K
- Formats d’image
- 1:1 · 16:9 · 9:16 · 4:3 · 3:4 · 3:2 +9
- Résultats par appel
- 1–6
- Longueur du prompt (caractères)
- 5,000
Paramètres
Ces champs viennent du schéma avec lequel nous vérifions chaque requête. Les champs qui n’y figurent pas sont refusés.
promptstringObligatoireDescribe the subject, composition, lighting, and any wording to render. There is no negative prompt: write what to leave out directly in the prompt.
aspect_ratiostringFacultatifLa forme du cadre : large, carrée ou verticale.
resolutionstringFacultatifTaille de sortie. Plus c’est grand, plus c’est net et plus c’est cher.
num_outputsintegerFacultatifModifie le prixCombien de résultats en une fois.
enable_prompt_expansionbooleanFacultatifLaisse le modèle enrichir un prompt court.
enable_thinkingbooleanFacultatifSpend extra reasoning on the rewrite for better images, at the cost of a longer wait. Only works while prompt expansion is on.
prompt_optimization_modestringFacultatifHow prompt expansion rewrites the brief: direct is a single pass that suits most prompts; agent is a multi-step rewrite with finer detail.
seedintegerFacultatifLe même nombre donne un résultat reproductible.
Schéma JSON brut
{
"type": "object",
"required": [
"prompt"
],
"properties": {
"seed": {
"type": "integer",
"maximum": 2147483647,
"minimum": 0,
"description": "Random seed for controlled comparisons."
},
"prompt": {
"type": "string",
"maxLength": 5000,
"minLength": 1,
"description": "Describe the subject, composition, lighting, and any wording to render. There is no negative prompt: write what to leave out directly in the prompt."
},
"resolution": {
"enum": [
"1k",
"1.5k",
"2k"
],
"type": "string",
"default": "2k",
"description": "Output resolution tier. Every tier costs the same."
},
"num_outputs": {
"type": "integer",
"default": 1,
"maximum": 6,
"minimum": 1,
"description": "How many images to generate in one request (1 to 6). Billed per image returned."
},
"aspect_ratio": {
"enum": [
"1:1",
"16:9",
"9:16",
"4:3",
"3:4",
"3:2",
"2:3",
"21:9",
"9:21",
"2:1",
"1:2",
"3:1",
"1:3",
"5:4",
"4:5"
],
"type": "string",
"default": "1:1",
"description": "Output aspect ratio."
},
"enable_thinking": {
"type": "boolean",
"default": true,
"description": "Spend extra reasoning on the rewrite for better images, at the cost of a longer wait. Only works while prompt expansion is on."
},
"enable_prompt_expansion": {
"type": "boolean",
"default": false,
"description": "Let the service rewrite and expand the prompt before generating."
},
"prompt_optimization_mode": {
"enum": [
"direct",
"agent"
],
"type": "string",
"default": "direct",
"description": "How prompt expansion rewrites the brief: direct is a single pass that suits most prompts; agent is a multi-step rewrite with finer detail."
}
},
"additionalProperties": false
}Réponses, interrogation et callbacks
Tous les modèles fonctionnent de la même façon : créez une tâche, puis interrogez-la ou attendez le callback.
Connaître le prix d’abord
curl -X POST https://api.popnow.ai/api/v1/jobs/quote \
-H "Authorization: Bearer $POPNOW_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "alibaba/qwen-image-2.1-pro/text-to-image",
"input": {
"prompt": "A ceramic teapot on a linen cloth, soft window light, muted palette",
"aspect_ratio": "1:1",
"resolution": "2k",
"num_outputs": 1
}
}'Même corps que createTask. Renvoie le débit attendu et le débit maximal possible, sans rien lancer.
Acceptée
HTTP/1.1 202 Accepted
{
"code": 200,
"msg": "success",
"data": {
"taskId": "task_01k3m8x9q2z4v7n5p6r8s0t1w3",
"state": "queued"
},
"request_id": "req_example_create"
}HTTP 202 signifie que la tâche est acceptée et que les crédits sont réservés, pas encore débités. Le débit final ne dépasse jamais la réservation.
Vérifier l’état
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
-H "Authorization: Bearer $POPNOW_API_KEY"Interrogez toutes les quelques secondes en espaçant progressivement, et arrêtez dès que state vaut succeeded, failed, canceled ou expired.
Tâche terminée
{
"code": 200,
"msg": "success",
"data": {
"taskId": "task_01k3m8x9q2z4v7n5p6r8s0t1w3",
"model": "alibaba/qwen-image-2.1-pro/text-to-image",
"state": "succeeded",
"output": {
"assets": [
{
"url": "https://cdn.popnow.ai/tasks/task_01k3m8x9q2z4v7n5p6r8s0t1w3/output.png?signature=FROM_RESPONSE",
"expiresAt": "2026-10-17T12:20:00Z",
"mime": "image/png",
"width": 1024,
"height": 1024
}
]
},
"settled": true
},
"request_id": "req_example_record"
}Téléchargez depuis l’url avant expiresAt. Besoin d’un nouveau lien plus tard ? Demandez-le à POST /common/download-url.
Vérifier un callback
import { createHash, createHmac, timingSafeEqual } from "node:crypto";
import express from "express";
const app = express();
// express.raw keeps the exact bytes that were signed; express.json would not match.
app.post("/hooks/popnow", express.raw({ type: "application/json" }), (req, res) => {
const timestamp = req.header("X-Webhook-Timestamp");
const signature = req.header("X-Webhook-Signature") ?? "";
const body = JSON.parse(req.body.toString("utf8"));
const taskId = body.data?.taskId ?? body.task_id;
const digest = createHash("sha256").update(req.body).digest("hex");
const expected = createHmac("sha256", process.env.POPNOW_WEBHOOK_SECRET)
.update(`${taskId}.${timestamp}.${digest}`)
.digest("base64");
const ok = expected.length === signature.length && timingSafeEqual(Buffer.from(expected), Buffer.from(signature));
// Check the signature first, then reject anything older than five minutes.
if (!ok || Math.abs(Date.now() / 1000 - Number(timestamp)) > 300) return res.status(401).end();
res.status(200).end(); // answer fast, then fetch the task and store its files
});Avec une callBackUrl, nous vous envoyons la tâche terminée. Vérifiez la signature sur le corps brut avant de lui faire confiance.
Envoyer un fichier local
curl -X POST https://api.popnow.ai/api/v1/common/upload-url \
-H "Authorization: Bearer $POPNOW_API_KEY" \
-H "Content-Type: application/json" \
-d '{"contentType": "image/png", "bytes": 482113}'
# PUT the file bytes to data.uploadUrl with every header in data.headers, then commit it:
curl -X POST https://api.popnow.ai/api/v1/files/$FILE_ID/commit \
-H "Authorization: Bearer $POPNOW_API_KEY"
# The commit returns a popnow://f/... reference. Put it in any image, video or
# audio field of the task input instead of a public https URL.Les liens https publics fonctionnent tels quels. Les fichiers locaux passent d’abord par upload-url et commit.

