Changelog

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Voice Cloning API: Expanded Language Support & Performance Improvements

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API Endpoint

• Standard API: POST /api/v6/voice/text_to_audio

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What’s New

• 48 languages supported — up from 19, now covering major South Asian, Southeast Asian, Middle Eastern, and European languages
• Faster inference — reduced latency for quicker audio generation
• More natural output — improved prosody and pronunciation across all supported languages
• Fully backward compatible — all existing language values continue to work

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Newly Added Languages

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MusicGen API: New Parameters

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API Endpoint

• Standard API: POST /api/v6/voice/music_gen

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New Parameters

• duration: Set the length of generated music in seconds. Any value between 30 and 480. Default: 30.
• output_format: Choose output format — wav, mp3, or flac. Default: wav.
• bitrate: Set audio bitrate — 128k, 192k, or 320k. Default: 320k.

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Video API: Scene Maker Endpoint Deprecated

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Deprecated Endpoint

• Standard API: POST /api/v6/video/scene_maker

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New Enterprise API Endpoint: Speech-to-Text

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API Endpoint

• Enterprise API: POST /api/v1/enterprise/speech_to_text/transcribe

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Key Features

• Convert speech audio into text transcription
• Multi-language transcription support
• Optional timestamp controls with timestamp_level (null, word, sentence)
• Webhook support via webhook and track_id for async tracking

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Song Generator API powered by ACE-Step v1.5

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API Endpoint

• Standard API: POST /api/v6/voice/song_generator

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What’s New

• ACE-Step v1.5 Model: State-of-the-art AI model for high-quality song generation with vocal synthesis
• 50+ Languages: Generate songs with vocals in languages from Arabic to Chinese, Cantonese to Spanish
• Flexible Duration: Create songs from 30 seconds to 8 minutes (30-480 seconds)
• Instrumental Mode: Generate instrumental versions without vocals using instrumental parameter
• Smart Lyrics Generation: Automatic lyrics generation based on prompt and caption, or use your own lyrics
• Advanced Control:
  • caption parameter for music style, instruments, atmosphere, and production style
  • lyrics parameter for song structure, vocal styles, and energy control
  • prompt parameter for automatic lyrics generation
  • Language-specific vocal synthesis with proper pronunciation

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New Documentation

• Song Generator API Reference: Complete API documentation with examples
• Song Generation Guide: Professional guide with best practices, caption writing tips, lyrics structure guidance, duration calculation, and real-world examples

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Key Features

• Professional music structure tags: [Intro], [Verse], [Chorus], [Bridge], [Outro]
• Vocal control tags: [raspy vocal], [whispered], [falsetto], [powerful belting]
• Energy control: [high energy], [building energy], [explosive], [melancholic]
• Consistent caption-lyrics matching for optimal results
• Duration calculation guidelines based on lyrics length and structure

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Getting Started

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New Parameter in Song Generator API Endpoint: Song Generator API

• diffrhythm-short: Generates shorter with maximum duration of 1 minute 35 seconds.
• diffrhythm-long: Generates longer songs with maximum duration of 4 minute 45 seconds.

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New parameter in Lyrics Generator API Endpoint: Lyrics Generator API

• short: Generates shorter lyrics with maximum duration of 1 minute 35 seconds.
• long: Generates longer lyrics with maximum duration of 4 minute 45 seconds.

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API Endpoints

• Standard API: POST /api/v6/voice/song_generator
• Standard API: POST /api/v6/voice/lyrics_generator

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Key Features

• Select between short and long models for song generation
• Specify desired length of generated lyrics

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New Enterprise API Endpoint: Qwen Text to Image

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API Endpoint

• Enterprise API: POST /api/v1/enterprise/qwen/text2img

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Key Features

• Generate high-definition images from text using Qwen model
• Supports various image styles and attributes
• Resolution up to 1024x1024 pixels.

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New Video API Endpoint: Watermark Remover

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API Endpoint

• Standard API: POST /api/v6/video/watermark_remover

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Key Features

• SORA watermark detection and removal
• Preserves video quality

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New Image Editing Endpoint: Caption

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API Endpoint

• Standard API: POST /api/v6/image_editing/caption

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Key Features

• Automatic image caption generation
• Customizable caption length (short, normal, long)
• Supports multiple image formats: png, jpeg, jpg

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Flux Kontext Dev Moved to Image Editing API

• New Location: Image Editing API → Flux Kontext Image to Image
• Endpoint: POST /api/v6/images/img2img
• Fixed OpenAPI playground display

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New Image Editing Endpoint: Qwen Edit

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API Endpoints

• Standard API: POST /api/v6/image_editing/qwen_edit
• Enterprise API: POST /api/v1/enterprise/image_editing/qwen_edit

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Key Features

• Prompt-based image editing and manipulation
• Support for single or multiple images (up to 4 images)

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New Interior API Endpoints

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Object Removal

• Endpoint: POST /api/v6/interior/object_removal
• Remove unwanted objects from interior images using AI
• Parameters: init_image, object_name, base64, webhook, track_id
• Simple text-based object identification

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Interior Mixer

• Endpoint: POST /api/v6/interior/interior_mixer
• Add objects from one image into another room image
• Parameters: init_image, object_image, prompt, width, height, guidance_scale, num_inference_steps
• Intelligent object placement with prompt-based positioning
• Configurable inference steps (default: 8) and guidance scale

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Documentation Updates

• Added complete API reference documentation for both endpoints
• Updated OpenAPI specification with new schemas
• Added visual indicators for new endpoints in the overview

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Rate Limits Documentation

• Pay as you go plan: 5 queued API requests
• Standard plan: 10 queued API requests
• Unlimited Premium Plan: 15 queued API requests

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Key Features

• Sequential Processing: Requests are processed one after another in queue order
• Queue Management: New requests are added to the queue and processed when previous ones complete
• Real-time Enforcement: Limits are enforced in real-time as requests come in
• FIFO Processing: Requests are processed in First-In-First-Out order

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Enterprise API Updates

• Added Reset S3 endpoint to Enterprise API General section
• Updated S3 management capabilities for dedicated servers

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New Model: Wan 2.5

• Text to Video: Generate videos from text prompts with audio support
• Image to Video: Transform static images into dynamic videos with sound
• Audio Integration: Built-in audio support for complete multimedia experiences
• Enhanced Quality: Improved motion smoothness and visual realism

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Available Models

• Wan 2.5 Text to Video
• Wan 2.5 Image to Video

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Added threshold parameter to NSFW Image Check

• Added threshold parameter to POST /nsfw_image_check.
  • Type: number; range: 0–1; default: 0.5.
  • Controls sensitivity for NSFW detection in images/videos.