Ltx 2.3 Lipsync

Ltx 2.3 Lipsync

Playground

LTX-2.3 Lipsync generates talking head videos from audio with synchronized lip movements and natural facial expressions. Built on DiT-based architecture with improved audio-visual alignment quality. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

LTX-2.3 Lipsync

LTX-2.3 Lipsync is an advanced AI model that generates talking head videos from audio and an optional reference image. Built on the LTX-2.3 DiT-based architecture with improved audio-visual quality, it creates realistic lip-synced videos that match your audio input.

Why Choose This?

• Improved quality Enhanced audio-visual alignment with better lip sync accuracy and natural facial movements.

• Audio-driven generation Automatically generates video with synchronized lip movements from audio input.

• Optional reference image Provide a portrait image to use as the base, or let the model use a default portrait.

• Flexible resolution Supports 480p, 720p, and 1080p outputs to balance quality and cost.

• Automatic duration Video length automatically matches audio duration (5-20 seconds).

Parameters

Resolution Options

How to Use

1. Upload your audio — the audio track that drives the video (5-20 seconds).
2. Upload reference image (optional) — a portrait to use as the base character.
3. Add prompt (optional) — describe the style or motion you want.
4. Select resolution — 480p for iteration, 720p for balance, 1080p for final output.
5. Run — submit and download the lip-synced video.

Pricing

Pricing is based on audio duration (automatically detected):

Best Use Cases

• Talking Head Videos — Generate spokesperson videos from audio recordings.
• Content Localization — Create videos in multiple languages from audio tracks.
• Virtual Presenters — Generate AI presenters for training, marketing, or education.
• Audio-to-Video — Convert podcasts or audio content into video format.
• Character Animation — Bring portraits to life with synchronized speech.

Pro Tips

• Audio quality directly affects lip sync accuracy - use clear audio.
• Provide a frontal portrait image for best results.
• Use prompt to guide facial expressions and style.
• Iterate at 480p to verify results, then render at higher resolution.
• Audio duration is automatically detected - no need to specify manually.

Notes

• Audio duration must be between 5-20 seconds.
• If no reference image is provided, a default portrait will be used.
• Video length automatically matches audio duration.

Related Models

• LTX-2.3 Text-to-Video — Generate video with audio from text.
• LTX-2.3 Image-to-Video — Animate images with synchronized audio.

# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/ltx-2.3/lipsync" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "resolution": "720p",
    "seed": -1
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"