Qwen Image 2.1 Turbo API

Alibabaimage$0.016 / image

Submit a Qwen Image 2.1 Turbo run over HTTP, then poll it or take a webhook. Results are files on media.ezflows.io. Try it in the playground first.

Async: the POST answers at once with a request id. Poll it, or take the webhook.

  1. 01

    Submit

    Parameters at the top level of the JSON body. Answers 202 with a request id.

    curlPOST /v1/models/qwen-image-2.1-turbo
    curl -X POST https://api.ezflows.io/v1/models/qwen-image-2.1-turbo \
      -H "Authorization: Bearer $EZFLOWS_API_KEY" \
      -H "Content-Type: application/json" \
      -d '{
        "prompt": "A die-cut glossy vinyl sticker of a potted monstera deliciosa houseplant in a terracotta pot, bold clean white sticker border, flat illustration, on a fully transparent background with a real alpha channel, no background fill.",
        "size": "1328*1328"
      }'
    
    # 202 Accepted, at once — it never waits for the model:
    # {"request_id": "req_8f2a41c9b70e4d15", "status": "queued",
    #  "poll_url": "https://api.ezflows.io/v1/requests/req_8f2a41c9b70e4d15"}
  2. 02

    Poll

    Same bearer header, every few seconds, until the status is final.

    curlGET /v1/requests/:id
    REQUEST_ID=req_8f2a41c9b70e4d15   # from the POST
    
    while :; do
      BODY=$(curl -s https://api.ezflows.io/v1/requests/$REQUEST_ID \
        -H "Authorization: Bearer $EZFLOWS_API_KEY")
      STATUS=$(echo "$BODY" | jq -r .data.status)
      case "$STATUS" in succeeded|failed|cancelled) break ;; esac
      sleep 3
    done
    
    echo "$BODY" | jq -r '.data.output.artifacts[].url'   # media.ezflows.io, kept 90 days
  3. 03

    Response

    Files are on media.ezflows.io, kept 90 days. A failed run says why and costs nothing.

    json200 · succeeded
    {
      "data": {
        "id": "req_8f2a41c9b70e4d15",
        "model_slug": "qwen-image-2.1-turbo",
        "status": "succeeded",
        "http_status": 200,
        "cost": 0.016,
        "auth_method": "api_key",
        "error": null,
        "submitted_at": "2026-09-12T18:07:21.114Z",
        "queue_started_at": "2026-09-12T18:07:21.402Z",
        "execution_started_at": "2026-09-12T18:07:22.010Z",
        "first_byte_at": "2026-09-12T18:07:52.871Z",
        "finished_at": "2026-09-12T18:07:55.203Z",
        "io_deleted_at": null,
        "canvas_id": null,
        "canvas_node_id": null,
        "client_attempt_id": null,
        "idempotency_key": null,
        "input": {
          "prompt": "A die-cut glossy vinyl sticker of a potted monstera deliciosa houseplant in a terracotta pot, bold clean white sticker border, flat illustration, on a fully transparent background with a real alpha channel, no background fill.",
          "size": "1328*1328"
        },
        "output": {
          "artifacts": [
            {
              "index": 0,
              "kind": "image",
              "contentType": "image/png",
              "url": "https://media.ezflows.io/outputs/<account>/req_8f2a41c9b70e4d15/0.png"
            }
          ]
        }
      }
    }
  4. 04

    Webhook

    Skip polling: we POST the result to your endpoint, at least once.

    Register
    Create an endpoint under Webhooks in the dashboard; the signing secret is shown once.
    Events
    request.succeeded · request.failed · request.cancelled
    Headers
    ezflows-event-id (dedupe on it) · ezflows-timestamp (unix seconds) · ezflows-signature t=<ts>,v1=<hex HMAC-SHA256 of "<ts>.<raw body>">
    Verify
    Over the exact bytes received, in constant time; reject anything older than five minutes.
    Respond
    Any 2xx within 10 s. Redirects are not followed.
    Retries
    Five, with backoff: 30 s · 60 s · 2 min · 4 min · 8 min. Disabled after five consecutive dead deliveries.
    jsonDelivery body
    {
      "id": "82cf46a4-841e-41d6-b3c7-facc937d3252",
      "type": "request.succeeded",
      "created_at": "2026-09-12T18:07:55Z",
      "data": {
        "id": "req_8f2a41c9b70e4d15",
        "model_slug": "qwen-image-2.1-turbo",
        "status": "succeeded",
        "cost": 0.016,
        "output": {
          "artifacts": [
            {
              "url": "https://media.ezflows.io/…/0.png"
            }
          ]
        }
      }
    }
    curlverify.sh
    # Create the endpoint under Webhooks in the dashboard; the signing secret is shown once.
    # ezflows-signature: t=<ts>,v1=<hex HMAC-SHA256 of "<ts>.<raw body>">
    # body.json = the exact bytes received. Reject anything older than five minutes.
    EXPECTED=$({ printf '%s.' "$TS"; cat body.json; } \
      | openssl dgst -sha256 -hmac "$EZFLOWS_WEBHOOK_SECRET" -r | cut -d' ' -f1)
    
    [ "$EXPECTED" = "$V1" ] && echo "valid" || echo "reject"

Parameters 7

NameTypeDefaultAllowedDescription
promptrequiredstringA die-cut glossy vinyl sticker of a potted monstera deliciosa houseplant in a terracotta pot, bold clean white sticker border, flat illustration, on a fully transparent background with a real alpha channel, no background fill.—Describe the image to generate, or the edit to apply to the reference images. Ask for a transparent background to get an alpha-channel PNG.
imagesstring[]—up to 10 image urlsOptional. Up to 10 images to edit, combine or take style and subject from. Order is preserved.
sizeenum1328*13281024*1024 · 1328*1328 · 768*1024 · 1024*768 · 1080*1440 · 1440*1080 · 928*1664 · 1664*928 · 2048*2048Output resolution. All sizes bill the same; total pixels from 512 x 512 up to 2048 x 2048.
prompt_extendbooleantrue—Let the model automatically rewrite and enrich short prompts.
prompt_extend_modeenumdirectdirect · agentHow the prompt is rewritten when Prompt Extend is on. Agent is text-to-image only; use Direct when editing.
seedinteger—0–2147483647Seed for reproducible results.
watermarkbooleanfalse—Add the Qwen watermark to the output.

File inputs (images: up to 10 image urls) take URLs. Upload the raw file to POST /v1/uploads with its own Content-Type and pass the url it returns. Inputs are kept 90 days.