## Basic tool info Model name: klingai/kling v4 flash Model description: Kling 4.0 Flash by KlingAI generates 720p videos (3–20s) from text or a first-frame image, with aspect ratio control for text-to-video and optional watermark output. Model cover: https://cdn.wiro.ai/uploads/models/klingai-kling-v4-flash-cover.mp4 Model categories: - tool - klingai - partner - text-to-video - image-to-video - nogpu-pipeline - quick-showcase - hero-showcase Run Task Endpoint (POST): https://api.wiro.ai/v1/Run/klingai/kling-v4-flash Get Task Detail Endpoint (POST): https://api.wiro.ai/v1/Task/Detail ## Model Inputs: - name: inputImage label: First Frame help: Optional. First frame for image-to-video. Leave empty for text-to-video. Referenced in the prompt as @image_1. type: combinefileinput default: https://cdn.wiro.ai/uploads/sampleinputs/kling-v4-flash-sampleinput-1.webp - name: prompt label: Prompt help: Optional. Required for text-to-video. The prompt to generate the video. Describe audio, dialogue and shots inside the prompt. With a first frame, describe what happens after it. type: textarea default: The snowboarder carves hard down the steep powder slope and throws a huge spray of snow toward the camera, then rides out of the turn and speeds away down the mountain. Bright sunny day, the camera follows from low on the slope. Sound of wind and carving snow. - name: duration label: Duration help: Required. Total duration of the generated video in seconds, from 3 to 20. Output is 720p. type: select default: 3 options: - value: "3" label: 3 - value: "4" label: 4 - value: "5" label: 5 - value: "6" label: 6 - value: "7" label: 7 - value: "8" label: 8 - value: "9" label: 9 - value: "10" label: 10 - value: "11" label: 11 - value: "12" label: 12 - value: "13" label: 13 - value: "14" label: 14 - value: "15" label: 15 - value: "16" label: 16 - value: "17" label: 17 - value: "18" label: 18 - value: "19" label: 19 - value: "20" label: 20 - name: ratio label: Ratio help: Optional. Default 16:9. Aspect ratio. Only applies to text-to-video; image-to-video follows the first frame. type: select default: 16:9 options: - value: "21:9" label: 21:9 - value: "16:9" label: 16:9 - value: "9:16" label: 9:16 - value: "1:1" label: 1:1 - name: watermark label: Watermark help: Optional. Default false. Whether to add a watermark to the result. type: select default: false options: - value: "false" label: false - value: "true" label: true ## Model Parameter Inspires: - prompt: The snowboarder carves hard down the steep powder slope and throws a huge spray of snow toward the camera, then rides out of the turn and speeds away down the mountain. Bright sunny day, the camera follows from low on the slope. Sound of wind and carving snow. - inputImage: https://cdn.wiro.ai/uploads/sampleinputs/kling-v4-flash-sampleinput-1.webp - prompt: She blows out all the candles in one breath, the flames flicker out and thin smoke rises, then she laughs as her friends cheer and clap and more confetti falls around her. Warm cozy party light. Cheering, clapping and laughter. - inputImage: https://cdn.wiro.ai/uploads/sampleinputs/kling-v4-flash-sampleinput-2.webp - prompt: The couple lets go of the glowing paper lantern together and it slowly rises up into the dark night sky to join the hundreds of other lanterns, they watch it go and smile at each other. The camera tilts up with the lantern. Soft festival murmur and gentle music. - inputImage: https://cdn.wiro.ai/uploads/sampleinputs/kling-v4-flash-sampleinput-3.webp - prompt: The boy tucks his knees and does a cannonball into the pool, a big splash of sparkling water bursts up toward the camera, then he pops back up laughing and wipes the water from his face. Bright summer sun. Big splash and happy laughter. - inputImage: https://cdn.wiro.ai/uploads/sampleinputs/kling-v4-flash-sampleinput-4.webp ## Integration Header Prepare ```bash # Sign up Wiro dashboard and create project export YOUR_API_KEY="YOUR_WIRO_API_KEY"; export YOUR_API_SECRET="XXXXXXXXX"; # unix time or any random integer value export NONCE=$(date +%s); # hmac-SHA256 (YOUR_API_SECRET+Nonce) with YOUR_API_KEY export SIGNATURE="$(echo -n "${YOUR_API_SECRET}${NONCE}" | openssl dgst -sha256 -hmac "${YOUR_API_KEY}" | awk '{print $NF}')"; ``` ## Run Command - Make HTTP Post Request ```bash curl -X POST "https://api.wiro.ai/v1/Run/klingai/kling-v4-flash" \ -H "Content-Type: application/json" \ -H "x-api-key: ${YOUR_API_KEY}" \ -H "x-nonce: ${NONCE}" \ -H "x-signature: ${SIGNATURE}" \ --data-binary @- <<'JSON' { "inputImage": [ "https://cdn.wiro.ai/uploads/sampleinputs/kling-v4-flash-sampleinput-1.webp" ], "prompt": "The snowboarder carves hard down the steep powder slope and throws a huge spray of snow toward the camera, then rides out of the turn and speeds away down the mountain. Bright sunny day, the camera follows from low on the slope. Sound of wind and carving snow.", "duration": "3", "ratio": "16:9", "watermark": "false", "callbackUrl": "You can provide a callback URL; Wiro will send a POST request to it when the task is completed." } JSON ``` ## Run Command - Response ```json { "errors": [], "taskid": "2221", "socketaccesstoken": "eDcCm5yyUfIvMFspTwww49OUfgXkQt", "result": true } ``` ## Get Task Detail - Make HTTP Post Request with Task ID ```bash curl -X POST "https://api.wiro.ai/v1/Task/Detail" \ -H "Content-Type: application/json" \ -H "x-api-key: ${YOUR_API_KEY}" \ -H "x-nonce: ${NONCE}" \ -H "x-signature: ${SIGNATURE}" \ -d '{ "taskid": "2221" }'; ``` ## Get Task Detail - Make HTTP Post Request with Socket Access Token ```bash curl -X POST "https://api.wiro.ai/v1/Task/Detail" \ -H "Content-Type: application/json" \ -H "x-api-key: ${YOUR_API_KEY}" \ -H "x-nonce: ${NONCE}" \ -H "x-signature: ${SIGNATURE}" \ -d '{ "tasktoken": "eDcCm5yyUfIvMFspTwww49OUfgXkQt" }'; ``` ## Get Task Detail - Response ```json { "total": "1", "errors": [], "tasklist": [ { "id": "2221", "uuid": "15bce51f-442f-4f44-a71d-13c6374a62bd", "socketaccesstoken": "eDcCm5yyUfIvMFspTwww49OUfgXkQt", "parameters": {}, "debugoutput": "", "debugerror": "", "starttime": "1734513809", "endtime": "1734513813", "elapsedseconds": "6.0000", "status": "task_postprocess_end", "createtime": "1734513807", "canceltime": "0", "assigntime": "1734513807", "accepttime": "1734513807", "preprocessstarttime": "1734513807", "preprocessendtime": "1734513807", "postprocessstarttime": "1734513813", "postprocessendtime": "1734513814", "totalcost": "0.003510000000", "chargedcost": "0.002808000000", "discountamount": "0.000702000000", "outputs": [ { "id": "6bc392c93856dfce3a7d1b4261e15af3", "name": "0.png", "contenttype": "image/png", "parentid": "6c1833f39da71e6175bf292b18779baf", "uuid": "15bce51f-442f-4f44-a71d-13c6374a62bd", "size": "202472", "addedtime": "1734513812", "modifiedtime": "1734513812", "accesskey": "dFKlMApaSgMeHKsJyaDeKrefcHahUK", "url": "https://cdn1.wiro.ai/6a6af820-c5050aee-40bd7b83-a2e186c6-7f61f7da-3894e49c-fc0eeb66-9b500fe2/0.png" } ], "size": "202472" } ], "result": true } ``` totalcost is the list price. chargedcost is the amount actually billed after any discount (a store fee is included on store runs); discountamount is the discount. chargedcost is null until the charge is recorded (shortly after task_postprocess_end) and "0" for a failed or cancelled task. ## Kill Task - Make HTTP Post Request with Task ID ```bash curl -X POST "https://api.wiro.ai/v1/Task/Kill" \ -H "Content-Type: application/json" \ -H "x-api-key: ${YOUR_API_KEY}" \ -H "x-nonce: ${NONCE}" \ -H "x-signature: ${SIGNATURE}" \ -d '{ "taskid": "534574" }'; ``` ## Kill Task - Make HTTP Post Request with Socket Access Token ```bash curl -X POST "https://api.wiro.ai/v1/Task/Kill" \ -H "Content-Type: application/json" \ -H "x-api-key: ${YOUR_API_KEY}" \ -H "x-nonce: ${NONCE}" \ -H "x-signature: ${SIGNATURE}" \ -d '{ "socketaccesstoken": "ZpYote30on42O4jjHXNiKmrWAZqbRE" }'; ``` ## Kill Task - Response ```json { "errors": [], "tasklist": [ { "id": "534574", "uuid": "15bce51f-442f-4f44-a71d-13c6374a62bd", "name": "", "socketaccesstoken": "ZpYote30on42O4jjHXNiKmrWAZqbRE", "parameters": { "inputImage": "https://api.wiro.ai/v1/File/mCmUXgZLG1FNjjjwmbtPFr2LVJA112/inputImage-6060136.png" }, "debugoutput": "", "debugerror": "", "starttime": "1734513809", "endtime": "1734513813", "elapsedseconds": "6.0000", "status": "task_cancel", "cps": "0.000585000000", "totalcost": "0.003510000000", "guestid": null, "projectid": "699", "modelid": "598", "description": "", "basemodelid": "0", "runtype": "model", "modelfolderid": "", "modelfileid": "", "callbackurl": "", "marketplaceid": null, "createtime": "1734513807", "canceltime": "0", "assigntime": "1734513807", "accepttime": "1734513807", "preprocessstarttime": "1734513807", "preprocessendtime": "1734513807", "postprocessstarttime": "1734513813", "postprocessendtime": "1734513814", "pexit": "0", "categories": "["tool","image-to-image","quick-showcase","compare-landscape"]", "outputs": [ { "id": "6bc392c93856dfce3a7d1b4261e15af3", "name": "0.png", "contenttype": "image/png", "parentid": "6c1833f39da71e6175bf292b18779baf", "uuid": "15bce51f-442f-4f44-a71d-13c6374a62bd", "size": "202472", "addedtime": "1734513812", "modifiedtime": "1734513812", "accesskey": "dFKlMApaSgMeHKsJyaDeKrefcHahUK", "foldercount": "0", "filecount": "0", "ispublic": 0, "expiretime": null, "url": "https://cdn1.wiro.ai/6a6af820-c5050aee-40bd7b83-a2e186c6-7f61f7da-3894e49c-fc0eeb66-9b500fe2/0.png" } ], "size": "202472" } ], "result": true } ``` ## Cancel Task - Make HTTP Post Request (For tasks on queue) ```bash curl -X POST "https://api.wiro.ai/v1/Task/Cancel" \ -H "Content-Type: application/json" \ -H "x-api-key: ${YOUR_API_KEY}" \ -H "x-nonce: ${NONCE}" \ -H "x-signature: ${SIGNATURE}" \ -d '{ "taskid": "634574" }'; ``` ## Cancel Task - Response ```json { "errors": [], "tasklist": [ { "id": "634574", "uuid": "15bce51f-442f-4f44-a71d-13c6374a62bd", "name": "", "socketaccesstoken": "ZpYote30on42O4jjHXNiKmrWAZqbRE", "parameters": { "inputImage": "https://api.wiro.ai/v1/File/mCmUXgZLG1FNjjjwmbtPFr2LVJA112/inputImage-6060136.png" }, "debugoutput": "", "debugerror": "", "starttime": "1734513809", "endtime": "1734513813", "elapsedseconds": "6.0000", "status": "task_cancel", "cps": "0.000585000000", "totalcost": "0.003510000000", "guestid": null, "projectid": "699", "modelid": "598", "description": "", "basemodelid": "0", "runtype": "model", "modelfolderid": "", "modelfileid": "", "callbackurl": "", "marketplaceid": null, "createtime": "1734513807", "canceltime": "0", "assigntime": "1734513807", "accepttime": "1734513807", "preprocessstarttime": "1734513807", "preprocessendtime": "1734513807", "postprocessstarttime": "1734513813", "postprocessendtime": "1734513814", "pexit": "0", "categories": "["tool","image-to-image","quick-showcase","compare-landscape"]", "outputs": [ { "id": "6bc392c93856dfce3a7d1b4261e15af3", "name": "0.png", "contenttype": "image/png", "parentid": "6c1833f39da71e6175bf292b18779baf", "uuid": "15bce51f-442f-4f44-a71d-13c6374a62bd", "size": "202472", "addedtime": "1734513812", "modifiedtime": "1734513812", "accesskey": "dFKlMApaSgMeHKsJyaDeKrefcHahUK", "foldercount": "0", "filecount": "0", "ispublic": 0, "expiretime": null, "url": "https://cdn1.wiro.ai/6a6af820-c5050aee-40bd7b83-a2e186c6-7f61f7da-3894e49c-fc0eeb66-9b500fe2/0.png" } ], "size": "202472" } ], "result": true } ``` ## Task Status Information This section defines the possible task status values returned by the API when polling for task completion. ### Completed Task Statuses (Polling can stop) These indicate that the task has reached a terminal state — either success or failure. Once any of these is received, polling should stop. - task_postprocess_end : Task completed successfully and post-processing is done. - task_cancel : Task was cancelled by the user or system. ### Running Task Statuses (Continue polling) These statuses indicate that the task is still in progress. Polling should continue if one of these is returned. - task_queue : Task is waiting in the queue. - task_accept : Task has been accepted for processing. - task_assign : Task is being assigned to a worker. - task_preprocess_start : Preprocessing is starting. - task_preprocess_end : Preprocessing is complete. - task_start : Task execution has started. - task_output : Output is being generated.