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 TTS Create Task POST /v1/audio/tts cURL Copy Collapse curl --request POST \ --url https://api-singapore.klingai.com/v1/audio/tts \ --header 'Authorization: Bearer ' \ --header 'Content-Type: application/json' \ --data '{ "text": "Throughout my time in college, several memorable event left a significant impact on my life", "voice_id": "oversea_male1", "voice_language": "en", "voice_speed": 1 }' 200 Copy Collapse { "code": 0, // Error codes; Specific definitions can be found in Error codes "message": "string", // Error information "request_id": "string", // Request ID, generated by the system, is 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 information, displaying the failure reason when the task fails (such as triggering the content risk control of the platform, etc.) "task_result": { "audios": [ { "id": "string", // Generated sound ID; globally unique, will be cleared after 30 days "url": "string", // URL for generating sounds，such as https://p1.a.kwimgs.com/bs2/upload-ylab-stunt/special-effect/output/HB1_PROD_ai_web_46554461/-2878350957757294165/output.mp3(To ensure information security, generated images/videos will be cleared after 30 days. Please make sure to save them promptly.) "duration": "string" // Total audio duration, unit: s (seconds) } ] }, "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 } } Text-to-Speech synthesis API for generating audio from text. Request Header Content-Type string Required Default to application/json Data Exchange Format Authorization string Required Authentication information, refer to API authentication Request Body text string Required Text Content for Audio Synthesis The maximum length of the text content is 1000 characters; content that is too long will return an error code and other information. The system will validate the text content; if there are issues, it will return an error code and other information. voice_id string Required Voice ID The system offers a variety of voice options to choose from. For specific voice effects, voice IDs, and corresponding voice languages, see Voice Guide. Voice previews do not support custom scripts. Voice preview file naming convention: Voice Name#Voice ID#Voice Language voice_language string Required Default to zh Voice Language Enum values： zh en The voice language corresponds to the Voice ID, as detailed above. voice_speed float Optional Default to 1.0 Speech Rate Valid range: [0.8, 2.0], accurate to one decimal place; values outside this range will be automatically rounded. Previous chapter：Video to Audio Next chapter：Voice Clone 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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