Decart

Decart

Decart is an Israeli AI lab building real-time generative video and interactive world models that respond to input in milliseconds rather than minutes. The Decart stack spans three lines: DOS, a GPU-optimization layer that speeds up inference; Lucy, a world-editing model that transforms live video for try-on, advertising, and streaming; and Oasis, a world-generation model aimed at robotics and physical AI. Decart first drew attention with a playable Minecraft-style demo in late 2024, then shipped MirageLSD, a live-stream diffusion model that re-skins any video feed in under 40 milliseconds. The company runs its models on Amazon Trainium chips and has been profitable nearly since launch.

Production credibility: Founded in 2023 by Dean Leitersdorf (CEO, three Technion computer-science degrees) and Moshe Shalev (CPO), who met in Israel's Unit 8200 military-intelligence unit. Decart has raised more than $450M total. Its May 2026 round brought in $300M at a valuation of nearly $4 billion, led by Radical Ventures with Nvidia, Adobe Ventures, and Toyota Ventures participating alongside returning backers Sequoia Capital, Benchmark, and Zeev Ventures; angel investor Andrej Karpathy also took part. An earlier August 2025 round was priced at a reported $3.1B valuation. Decart says its DOS stack delivers about 1,600 tokens/second for agentic inference (versus an industry average near 200) and full-HD video inference up to 100 frames/second. Lucy 2.0 runs on Amazon's Trainium3 hardware, and Decart reports being profitable almost from day one via GPU-optimization deals with cloud providers and AI labs.

Key Features

• DOS (Decart Optimization Stack): hardware-to-model inference layer that cuts optimization from months to weeks across chips
• Lucy: real-time world-editing model for virtual try-on, live advertising, social, and gaming at production scale
• Oasis: world-generation model for physical AI, robotics, autonomous-systems, and logistics simulation
• MirageLSD: live-stream diffusion that transforms any video feed frame-by-frame in under 40ms
• Runs on Amazon Trainium chips, with Lucy 2.0 deployed on Trainium3 silicon
• Web demos plus iOS and Android apps for live video transformation
• Sub-30ms response on world-model input for immersive, continuous generation
• Licensable optimization stack used by external cloud providers and AI labs

Ideal Use Case

Creators and platforms use Decart to restyle live video, virtual try-on, and streaming in real time, while AI labs and cloud providers license DOS to speed up model inference across different chips.

How Decart differentiates

Where Runway and Luma focus on generating finished clips from a prompt, Decart's MirageLSD and Lucy transform a live feed continuously at interactive latency, which suits streaming and try-on more than polished short films. Against Google's Genie and similar world models, Decart ships publicly accessible demos and an inference stack tuned for Amazon Trainium rather than a single proprietary cloud. The trade-off is resolution and frame rate: real-time output runs at lower fidelity than batch renderers, and the DOS optimization business serves engineers more than end creators. Decart spreads effort across consumer apps, world models, and infrastructure, so depth in any one area varies.

FAQ

Q: What does Decart do? A: Decart builds real-time generative video and world models (Lucy, Oasis, MirageLSD) plus DOS, an optimization stack that accelerates AI inference. Its models transform or generate interactive video at interactive latency rather than rendering clips offline.

Q: Who founded Decart? A: Decart was founded in 2023 by Dean Leitersdorf (CEO) and Moshe Shalev (CPO), who met in Israel's Unit 8200 military-intelligence unit. Leitersdorf holds three computer-science degrees from the Technion.

Q: How much has Decart raised? A: Decart has raised more than $450M total. Its May 2026 round added $300M at a valuation of nearly $4 billion, led by Radical Ventures with Nvidia, Adobe Ventures, and Toyota Ventures participating.

Q: Decart vs Runway: how do they differ? A: Runway generates finished video clips from prompts for editing workflows. Decart's MirageLSD and Lucy transform a live video feed continuously in under 40ms, favoring streaming, try-on, and real-time use over high-resolution offline renders.

Q: Is Decart free to use? A: Decart offers free web demos of Lucy and Mirage, and the underlying platform is available with paid API access for production use; DOS is licensed to cloud providers and AI labs.

tl;dr

Decart is an Israeli AI lab making real-time generative video and world models (Lucy, Oasis, MirageLSD) on top of its DOS inference stack. It raised $300M in May 2026 at a valuation near $4B and runs its models on Amazon Trainium chips.

Related

Looking for more options? Browse the Video Creation directory or read our best AI video tools listicle. Decart is also tracked on Crunchbase.