InfiniteTalk API
The InfiniteTalk API turns a single portrait photo and audio into a talking or singing avatar video with precise lip synchronization. Generate videos up to 10 minutes at 480p or 720p with per-second billing.
Parameters
Drag and drop a file or click to upload
JPG, JPEG, PNG, WEBP up to 10MB
Drag and drop a file or click to upload
MP3, WAV, M4A up to 128MB
Output
Generated content will appear here
InfiniteTalk API Complete Guide
Learn how to integrate the InfiniteTalk API, create talking avatar videos from photos and audio, and build digital human workflows for your applications.
What is the InfiniteTalk API?
The InfiniteTalk API is an audio-driven avatar lipsync model that produces videos with precise lip synchronization, aligning head, face, and body movements to the input audio. It maintains identity across unlimited-length videos.
Upload a portrait photo and an audio file, and the InfiniteTalk API generates a realistic talking or singing avatar video. With optional prompts, 480p and 720p resolution, and per-second pricing, it is ideal for virtual spokespersons, e-learning, and conversational AI.
Why Developers Choose the InfiniteTalk API
Key advantages that make the InfiniteTalk API stand out for digital human generation
InfiniteTalk API converts one portrait photo plus audio into a talking or singing avatar video
Precise lip synchronization aligns mouth movements to speech with natural rhythm
Full-body coherence captures head movements, facial expressions, and posture changes
Identity preservation maintains consistent facial identity across all frames
Supports videos up to 10 minutes with per-second billing (minimum 5 seconds)
Choose 480p standard or 720p HD resolution for the InfiniteTalk API output
Optional text prompt to control scene, expression, or pose while syncing to audio
Async task workflow with polling or callbacks for production integrations
What Can You Build with the InfiniteTalk API?
From virtual spokespersons to singing avatars, the InfiniteTalk API powers diverse digital human workflows
Virtual Spokespersons
Use the InfiniteTalk API to create talking avatar videos from a single photo for product launches, company announcements, and brand messaging.
E-Learning & Training
Generate instructor-led video content from photos and voiceovers with the InfiniteTalk API for scalable educational material production.
Customer Support Bots
Build visual AI customer service agents with the InfiniteTalk API that speak naturally to users with synchronized lip movements.
Social Media Content
Create engaging talking-head videos for TikTok, Reels, and Shorts from a single portrait with the InfiniteTalk API.
Podcast & Audio Visualization
Turn podcast audio into talking avatar videos with the InfiniteTalk API for visual distribution on video platforms.
Singing & Music Videos
Animate characters to sing along with music tracks using the InfiniteTalk API for creative music video production.
InfiniteTalk API Technical Specs
Performance, resolution, and output details for the InfiniteTalk API
Max Duration
Up to 10 minutes per video
Lip Sync
Precise audio-driven synchronization
Resolution
480p standard or 720p HD
InfiniteTalk API Developer Reviews
Feedback from teams using the InfiniteTalk API in production
“The lip sync quality is impressive. The InfiniteTalk API lets us generate talking avatar videos from a single photo for our e-learning platform.”
Lisa Wang
Product Manager
“Per-second billing is great for our variable-length content. The InfiniteTalk API handles 10-minute videos smoothly without breaking the bank.”
Ryan Kim
CTO
“We replaced our custom lip-sync pipeline with the InfiniteTalk API. Identity preservation and natural head motion are top-notch.”
David Park
Senior Developer
InfiniteTalk API Known Limitations
Current constraints to consider when integrating the InfiniteTalk API
Only image-to-video mode is supported (requires both image and audio)
Audio must be a public MP3, WAV, or M4A URL, up to 128MB and 10 minutes
Minimum billing is 5 seconds regardless of actual audio length
Prompt should be kept short and in English for best results
Do not use the full image as a mask — it may render as fully black
Content must comply with provider safety policies
Start Building with the InfiniteTalk API Today
Try the InfiniteTalk API in the playground above, or jump straight into the documentation to integrate it into your project.