Lucy 2.6 transforms a video stream as it is captured, swapping characters, outfits, objects and backgrounds from a text prompt, a reference image, or both.
Decart, the AI research lab building real-time world models, has released Lucy 2.6, the latest version of its live video editing model. For this update, instead of building completely new features, Decart’s developers focused on improving the quality of the model’s output. Edits now follow the prompt and the reference image more closely, and they keep that detail for the length of a stream.
Lucy 2.6 builds on Lucy 2.5, which Decart introduced in July with real-time visual effects. That release showed the potential of live AI video use cases, while this one demonstrates that live AI video is ready for mass media implementation.
What changed in Lucy 2.6 #
Decart’s release announcement focuses on several areas of improvement. Faces, proportions and materials track the reference image more closely, with better lighting and motion. Complex outfits and unusual garments keep their shape and detail throughout a live stream, which matters most for fashion and retail use.
Speech and expression also look more natural, for both photoreal and animated characters, so lip sync is tighter. Accessories, products and props now match the reference in material and proportion and sit more naturally in the frame.
Amazon is in talks to buy AI startup Decart for about $7 billion Decart, maker of the real-time video model Lucy and the robotics-training tool Oasis, was valued at $4 billion in May. Amazon's reported offer would nearly double that in six months. - Amazon acquires AI startup Decart for billions - real time video editing AI technology acquisition
The final change is practical. Several operations, such as a background replacement and a character swap, can now run together from a single prompt. Each request can now use its own reference image.
Built on the Decart Optimization Stack #
Lucy 2.6 runs on the Decart Optimization Stack, or DOS, the company's in-house inference and training solution. DOS tunes models to the underlying chips to cut latency and cost. For a model that edits video as it is captured, both of those are central to whether the result is usable live.
Where it is already being used #
Decart says Lucy 2.6 is already in use outside the lab. At a recent Colorado Avalanche home game, The Famous Group used it to deliver real-time AI visuals to the arena audience. In London, an Under Armour store ran a virtual try-on storefront built with Loook.ai.
Decart's own Delulu Stream app puts the model in viewers' hands, letting them change a streamer's character, outfit or scene live.
Who it is designed for #
Lucy 2.6 changes the game for several sectors. Live shows and broadcast teams get real-time visual effects and scene changes at event scale. Fashion and retail brands get live try-on and product presentation without a physical sample.
Social platforms and creators can offer audience-driven character, outfit and scene changes during a stream. Developers can build live commerce and interactive video experiences on the Decart API.
Taken together, the list shows where the company sees demand for live video editing: places where an audience is watching in the moment and the visual has to be right the first time. A try-on that distorts a garment or a character whose speech looks off breaks the effect, which is why fidelity and lip sync are the focus of this release.
Amazon is reportedly circling Decart after Nvidia and Anthropic both walked away Decart's founders rejected a higher Nvidia bid for Anthropic, which then abandoned its roughly $7 billion deal in September after due diligence, leaving Amazon, SpaceX and Nebius circling the Tel Aviv startup. - amazon acquires Israeli AI startup Decart for billions - Decart world model AI video technology acquisition deal
Availability #
Lucy 2.6 is available now on the Decart platform's APIs. A live demo is at lucy.decart.ai, with documentation at docs.platform.decart.ai.
Decart is a vertically integrated AI research lab, founded in 2023, that builds real-time world models and the infrastructure to run them. Its products include the Lucy live video models, the Oasis world models and the Decart Optimization Stack.
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