The technology behind Wan 2.6
How the model works, based on public documentation and sourced evidence.
Wan 2.6 is the December 2025 generation of Alibaba's Wan (Tongyi Wanxiang) model family, announced on December 16, 2025. The series spans five models: text-to-video, image-to-video, a new reference-to-video model (R2V), and two image models. Earlier open releases in the family (Wan 2.1 and 2.2) documented a diffusion transformer (DiT) design using flow matching with a spatio-temporal Wan-VAE for video compression, but Alibaba has not released open weights for 2.6, which is offered only as a hosted service.
The headline addition is reference-to-video: you upload one to three short reference videos of a person, and the model preserves both their appearance and their voice while generating new scenes from a text prompt. Alibaba describes it as China's first reference-to-video generation model. The 2.6 series also adds intelligent multi-shot storytelling, meaning a single prompt can produce a sequence of cuts with consistent characters, lighting, and sound across shots.
Per Alibaba's documentation, clips can run any whole number of seconds from 2 to 15 at 720p or 1080p, and reference-to-video is capped at 10 seconds. Multi-shot output is a request option that only takes effect when the model is allowed to rewrite the prompt, and you can supply your own audio track of 3 to 30 seconds for the model to sync against. Alibaba also cites improved audio-visual synchronization and stronger instruction following compared with earlier versions.
The main boundary to know: unlike Wan 2.2, the 2.6 weights are not public, so you cannot run it locally or fine-tune it for specialized tasks. Independent head-to-head tests also found its lip sync and audio clarity trailing Google's Veo 3.1 on dialogue-heavy and music clips.
On Vidney, Wan 2.6 runs text to video and image to video in 5, 10 or 15 second clips at 720p or 1080p, and every clip comes back with sound. Prompts are sent as written, so the multi-shot rewrite does not run here: a prompt that describes three shots comes back as one continuous camera move. The Flash tier is image to video only, at the same lengths and sizes, and it is the one with a sound switch; a silent Flash clip costs half. Reference to video, your own soundtrack and lengths other than 5, 10 and 15 seconds are not offered here.