The Kling 3.0 series models API is now fully available Learn More Get Started Overview Quick Start Changelog API Reference General Info Rate Limits Callback Schema Video Generation Models Video Omni Text to Video Image to Video Reference to Video Motion Control Multi-elements to video Extend Video Lip Sync Avatar Text to Audio Video to Audio Text to Speech Voice Clone Image Recognize Element Effects Effect Templates NEW Video Effects Image Generation Models Image Omni Image Generation Reference to Image Extend Image AI Multi-Shot Virtual Try-On Others Query user info Pricing Billing Info Prepaid Resource Packs Protocols Privacy Policy of API Service Terms of API Service API Service Level Agreement Text to Audio Create Task POST /v1/audio/text-to-audio cURL Copy Collapse curl --request POST \ --url https://api-singapore.klingai.com/v1/audio/text-to-audio \ --header 'Authorization: Bearer ' \ --header 'Content-Type: application/json' \ --data '{ "prompt": "Fireworks sound during Chinese New Year celebration", "duration": 3, "external_task_id": "", "callback_url": "" }' 200 Copy Collapse { "code": 0, // Error codes; Specific definitions can be found in "Error Code" "message": "string", // Error information "request_id": "string", // Request ID, generated by the system, used to track requests and troubleshoot problems "data": { "task_id": "string", // Task ID, generated by the system "task_info": { // Task creation parameters "external_task_id": "string" // Customer-defined task ID }, "task_status": "string", // Task status, Enum values: submitted, processing, succeed, failed "created_at": 1722769557708, // Task creation time, Unix timestamp, unit: ms "updated_at": 1722769557708 // Task update time, Unix timestamp, unit: ms } } Request Header Content-Type string Required Default to application/json Data Exchange Format Authorization string Required Authentication information, refer to API authentication Request Body prompt string Required Text prompt Cannot exceed 200 characters duration float Required Generated audio duration Value range: 3.0s - 10.0s, supports one decimal place precision external_task_id string Optional Customized Task ID Users can provide a customized task ID, which will not overwrite the system-generated task ID but can be used for task queries. Please note that the customized task ID must be unique within a single user account. callback_url string Optional The callback notification address for the result of this task. If configured, the server will actively notify when the task status changes The specific message schema of the notification can be found in Callback Protocol Query Task (Single) GET /v1/audio/text-to-audio/{id} cURL Copy Collapse curl --request GET \ --url https://api-singapore.klingai.com/v1/audio/text-to-audio/{task_id} \ --header 'Authorization: Bearer ' \ --header 'Content-Type: application/json' 200 Copy Collapse { "code": 0, // Error codes; Specific definitions can be found in "Error Code" "message": "string", // Error information "request_id": "string", // Request ID, generated by the system, used to track requests and troubleshoot problems "data": { "task_id": "string", // Task ID, generated by the system "task_status": "string", // Task status, Enum values: submitted, processing, succeed, failed "task_status_msg": "string", // Task status message, displaying the failure reason when the task fails (such as triggering the platform's content risk control, etc.) "task_info": { // Task creation parameters "external_task_id": "string" // Customer-defined task ID }, "task_result": { "audios": [ { "id": "string", // Audio ID; globally unique "url_mp3": "string", // URL for generated audio in MP3 format (Please note that for information security, generated audios will be cleared after 30 days. Please save them promptly.) "url_wav": "string", // URL for generated audio in WAV format (Please note that for information security, generated audios will be cleared after 30 days. Please save them promptly.) "duration_mp3": "string", // Total duration of the audio in MP3 format, unit: s "duration_wav": "string" // Total duration of the audio in WAV format, unit: s } ] }, "final_unit_deduction": "string", // The deduction units of task "created_at": 1722769557708, // Task creation time, Unix timestamp, unit: ms "updated_at": 1722769557708 // Task update time, Unix timestamp, unit: ms } } Request Header Content-Type string Required Default to application/json Data Exchange Format Authorization string Required Authentication information, refer to API authentication Path Parameters task_id string Optional The task ID for audio generation Request path parameter, fill the value directly in the request path You can choose to query by external_task_id or task_id external_task_id string Optional Customized Task ID for audio generation The external_task_id filled in when creating the task. You can choose to query by external_task_id or task_id Query Task (List) GET /v1/audio/text-to-audio cURL Copy Collapse curl --request GET \ --url 'https://api-singapore.klingai.com/v1/audio/text-to-audio?pageNum=1&pageSize=30' \ --header 'Authorization: Bearer ' \ --header 'Content-Type: application/json' 200 Copy Collapse { "code": 0, // Error codes; Specific definitions can be found in "Error Code" "message": "string", // Error information "request_id": "string", // Request ID, generated by the system, used to track requests and troubleshoot problems "data": [ { "task_id": "string", // Task ID, generated by the system "task_status": "string", // Task status, Enum values: submitted, processing, succeed, failed "task_status_msg": "string", // Task status message, displaying the failure reason when the task fails (such as triggering the platform's content risk control, etc.) "task_info": { // Task creation parameters "external_task_id": "string" // Customer-defined task ID }, "task_result": { "audios": [ { "id": "string", // Audio ID; globally unique "url_mp3": "string", // URL for generated audio in MP3 format (Please note that for information security, generated audios will be cleared after 30 days. Please save them promptly.) "url_wav": "string", // URL for generated audio in WAV format (Please note that for information security, generated audios will be cleared after 30 days. Please save them promptly.) "duration_mp3": "string", // Total duration of the audio in MP3 format, unit: s "duration_wav": "string" // Total duration of the audio in WAV format, unit: s } ] }, "final_unit_deduction": "string", // The deduction units of task "created_at": 1722769557708, // Task creation time, Unix timestamp, unit: ms "updated_at": 1722769557708 // Task update time, Unix timestamp, unit: ms } ] } Request Header Content-Type string Required Default to application/json Data Exchange Format Authorization string Required Authentication information, refer to API authentication Query Parameters pageNum int Optional Default to 1 Page number Value range: [1, 1000] pageSize int Optional Default to 30 Number of items per page Value range: [1, 500] Previous chapter：Avatar Next chapter：Video to Audio Create Task Query Task (Single) Query Task (List) The Kling 3.0 Series Models API is Now Fully Available – All in One, One for All！ Models Available in This Release Kling 3.0 Motion Control, Kling Video 3.0, Kling Video 3.0 Omni, Kling Image 3.0, Kling Image 3.0 Omni Refer to Key Highlights of the Models 3.0 All-in-One: A unified model for multi-modal input and output. Most powerful consistency across the universe: Subject consistency (supports cameo, subject with voice control, i2v + subject) and text consistency. Narrative control at your fingertips: More freedom, precision, and control—up to 15 seconds long, video scene cuts, ultra-high-definition storyboards/images, custom seconds. Upgraded native audio-visual output: Supports multiple speakers and languages (with accents). Kling 3.0 Motion Control Consistent Facial Identity from any angle Complex Emotions faithfully reproduced High fidelity Restoration, Even with Face Occlusions Consistent Facial Clarity Across Dynamic Framing User Guide -> Kling Video 3.0 Compared to 2.6, expected improvements: Supports subject upload in I2V scenarios for enhanced consistency Significant improvement in multi-character referencing, especially for three-person scenarios Supports Japanese, Korean, and Spanish in addition to Chinese and English Capable of generating certain dialects and accents Better distinction and control over different types of audio (speech, sound effects, BGM) Improved text retention in I2V scenarios Supports scene transitions, with up to 6 shots and customizable storyboarding User Guide -> Kling Video 3.0 Omni Compared to O1, expected improvements: Native audio-visual synchronization Supports video subject creation Further improved consistency in reference-based tasks, especially for characters and products Combined capabilities of reference + storyboarding + audio-visual sync significantly enhance usability Supports scene transitions, with up to 6 shots Extended generation duration up to 15 seconds User Guide -> Kling Image 3.0 Highly consistent feature retention Precise response to detail modifications Accurate control over style and tone Rich imaginative capabilities User Guide -> Kling Image 3.0 Omni Enhanced narrative sense New storyboard image set generation, retaining reference image features with scene relevance Direct output of 2K/4K ultra-high-definition images Further improved detail consistency User Guide -> Thank you for your support and understanding! 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