HeyGen Lipsync Speed on AI Compare Hub

HeyGen Lipsync Speed is HeyGen's fast lipsync AI video model — replacing or dubbing audio on any video with quick, audio-driven lip movement. Available on AI Compare Hub, HeyGen Lipsync Speed is the speed-optimised tier of HeyGen's lipsync lineup, with dynamic duration matching, optional background-music removal, and built-in speech enhancement for rapid, high-volume lipsync work.

What you can create

• Quick social re-dubbing

  Re-voice short-form social videos for trend remixes, alternative captions, or rapid A/B tests. HeyGen Lipsync Speed's fast pipeline keeps iteration cycles short for high-volume content teams.

• Multilingual draft passes

  Produce first-pass localised versions of marketing or training videos in multiple languages. Use HeyGen Lipsync Speed for the rapid draft, then promote winners to a higher-fidelity tier for final delivery.

• Bulk content updates

  Refresh script lines across an entire video library in a single batch run. HeyGen Lipsync Speed's per-second cost keeps bulk re-dubbing affordable for large content catalogues.

• Rapid prototyping for video ads

  Test multiple voiceover variants for the same creative — different scripts, voices, or emotional tones — before committing to a final cut. HeyGen Lipsync Speed makes the iteration loop fast.

Why creators choose HeyGen Lipsync Speed

• Speed-optimised pipeline

  HeyGen Lipsync Speed is tuned for the fastest turnaround in HeyGen's lipsync lineup, trading a small amount of fidelity for significantly shorter generation times. Ideal when iteration speed matters more than absolute fidelity.

• Dynamic duration matching

  The enable_dynamic_duration toggle (on by default) lets the output adjust its length to match the new audio. HeyGen Lipsync Speed avoids the awkward truncation or silent padding common to fixed-duration lipsync.

• Background music removal

  The disable_music_track flag strips background music from the source video before re-animating, producing a cleaner output when the original soundtrack should not survive into the final clip.

• Built-in speech enhancement

  Toggle enable_speech_enhancement to clean up the replacement audio's clarity directly in the pipeline. HeyGen Lipsync Speed produces a more intelligible final voiceover without separate audio post-processing.

How to generate your first HeyGen lipsync video

1. Upload your source video. Provide the video whose mouth movements should be re-animated. Live-action speakers and avatar footage are both supported.
2. Upload your replacement audio. Add the audio file containing the new voiceover or dialogue that should drive the lip movement.
3. Configure and generate. Toggle dynamic duration matching, background-music removal, and speech enhancement to suit your output, then run HeyGen Lipsync Speed on AI Compare Hub.

Common questions

What is HeyGen Lipsync Speed?

HeyGen Lipsync Speed is the fast tier of HeyGen's AI lipsync lineup, available via the Replicate API. It replaces or dubs the audio on any source video and re-animates the speaker's mouth to match — quickly, at lower cost than the precision tier, and with optional dynamic-duration matching, background-music removal, and speech enhancement built into the pipeline.

How is HeyGen Lipsync Speed different from HeyGen Lipsync Precision?

HeyGen Lipsync Speed is the fast, lower-cost tier — best for rapid iteration, multilingual draft passes, and high-volume social content. HeyGen Lipsync Precision uses an avatar-inference pipeline for higher visual fidelity at a higher per-second cost, recommended for marketing, broadcast, and customer-facing deliverables. Both tiers share the same input parameters.

Can HeyGen Lipsync Speed match the output length to the new audio?

Yes — the enable_dynamic_duration parameter (true by default) lets the output adjust its length to match the new audio rather than being locked to the source video's original duration. HeyGen Lipsync Speed automatically extends or trims the output so the lipsync covers the entire new voiceover.

How can you use HeyGen Lipsync Speed on AI Compare Hub?

To generate lipsync videos with HeyGen Lipsync Speed on AI Compare Hub, click the "HeyGen Lipsync Speed" button at the top of this page. Upload your source video and replacement audio, toggle dynamic duration / music removal / speech enhancement as needed, and generate in seconds. You can also compare HeyGen Lipsync Speed side-by-side with other leading AI lipsync models — all in one place, for free.