Hedra Avatar

Hedra Avatar is optimized for generating highly expressive talking-head videos with accurate lip-sync. By pairing a static portrait with an audio file, the model tracks phonemes to naturally match mouth movements and facial expressions to the spoken rhythm. According to the Hedra API documentation, it is ideal for character-driven storytelling, educational videos, and virtual presenters, supporting continuous video generations of up to 10 minutes in length.

Hedra Avatar is part of Hedra’s family of models for audio-driven video. Hedra is also developing Omnia as a unified world model and an open core base for partners to specialize through post-training on visual data.

To achieve the best results, the community recommends separating your image generation from your animation step. Use a dedicated image model like Nano Banana 2 to generate a high-quality, static portrait. Once your character design is locked, upload that image alongside your audio file into Hedra Avatar. You can also include an Avatar Behavior Prompt (e.g., 'gestures naturally, occasional smile') to guide the specific emotional expressions and micro-movements during the lip-sync. For more structured prompting, consult Hedra's official prompt guide.