Decart

Decart is an Israeli AI lab that builds real-time AI infrastructure and the live video and world models that run on it. Its products are DOS, an optimisation stack that tunes everything from hardware to running models, Lucy, a live video model that transforms footage as it plays, and Oasis, an interactive world model.

It was founded at the end of 2023 by Dean Leitersdorf, the CEO, and Moshe Shalev, the CPO, who met in the Israeli military's Unit 8200. Leitersdorf's younger brother Orian joined later as a third founder. Decart came out of stealth with a $21M seed round led by Sequoia, then raised a $32M Series A led by Benchmark and a $100M round in August 2025 at a reported $3.1B valuation. In May 2026 it raised $300M at about $4B, led by Radical Ventures with Nvidia among the new investors, which took total funding past $450M. Sequoia is reported to be its largest investor.

In 2026 the company released Lucy 2 (January), Oasis 3 (June) and Lucy 2.5 (July). From August 2026 the press reported that its founders were in talks to sell it for roughly $6B to $7B, first with Anthropic outbidding Nvidia, then Anthropic reportedly withdrawing after due diligence and Amazon reportedly entering talks at around $7B.