Decart Raises $300m Series B at ~$4B Valuation

Israel-based AI infrastructure company Decart has raised $300m in a Series B round led by Radical Ventures, with participation from NVIDIA (NASDAQ: NVDA), Atreides Management, Valor Equity Partners, Adobe Ventures, Toyota Ventures, and eBay Ventures (NASDAQ: EBAY) as new investors, alongside returning backers Sequoia Capital, Benchmark, and Zeev Ventures. Private investors include OpenAI co-founder Andrej Karpathy (now at Anthropic), former Walt Disney CEO Michael Eisner, the Nintendo (TYO: 7974) founding family office Yamauchi-No.10, and gaming investor Moritz Baier-Lentz. Amazon (NASDAQ: AMZN) has also joined as a strategic customer and chip co-design partner through its Annapurna Labs division. The round values Decart at approximately $4B post-money valuation.

The deal caps the fastest seed-to-mega-round arc InvestGame has tracked in the AI-gaming category. Founded in late 2023 by CEO Dr. Dean Leitersdorf and CPO Moshe Shalev, Decart emerged from stealth with a $21m Seed round in Oct’24, led by Sequoia Capital. It followed with a $32m Series A, led by Benchmark, just two months later at a post-money valuation of over $500m. In Aug’25, a further $100m round valued the company at $3.1B, reaching unicorn status. With this latest raise, the company has achieved an approximately 8x valuation step-up in 17 months — materially outpacing the broader AI infrastructure median of 3-4x in the same window. Total funding now exceeds $450m across four publicly disclosed rounds in 19 months.

Decart is a vertically integrated AI research lab building real-time world models and the ultra-optimized infrastructure to power them. Unlike horizontal AI providers that focus on text-based language models, Decart develops systems that simulate and generate interactive digital environments in real time, responding to user input in under 30 milliseconds. The company currently ships three core product lines:

• DOS (Decart Optimization Stack) — a full-stack inference and training platform for LLM, agentic, video, and world model workloads across NVIDIA GPU, Google TPU, and Amazon Trainium hardware. DOS 2.0, announced alongside the raise, delivers over 1,600 tokens per second for agentic inference (versus an industry average of ~200) and full-HD video at up to 100 frames per second.
• Lucy — a world model for immersive experiences, already deployed in production for real-time applications across gaming, e-commerce, streaming, and dynamic in-video advertising. Lucy 2.5, an updated model, is set to be released in the coming weeks.
• Oasis — a world model for physical AI, generating interactive, physically accurate, real-time simulations for robotics and autonomous systems. Oasis first drew attention as the AI-generated Minecraft demo that emerged during Decart’s stealth phase in 2024. Oasis 3 is set to launch in the coming weeks.

Together, these three product lines position Decart as one of the few AI companies building across the full stack from inference infrastructure to real-time content generation, with live deployments already in production. The gaming implications are notable: Decart’s Oasis model, developed with Etched in Oct’24, already demonstrates a playable world generated entirely in real time by a foundation model with no underlying physics engine. Through its strategic partnership with Amazon Web Services, Decart has also expanded Lucy into corporate deployment across media, live advertising, and commerce, operating at under 30ms latency, well within the sub-35ms threshold required for live web commerce. The diversity of the investor base signals that these technologies are approaching commercial viability across multiple verticals simultaneously.

Decart’s raise underscores a broader acceleration of AI-focused capital flowing into gaming. Annual deal value has grown approximately 9x since 2020, with growth accelerating into 2026 — 2026 YTD already matches 2025’s full-year total before mid-year. The composition of capital is also shifting: while seed activity still leads by deal count, Series B and later rounds account for the majority of dollars deployed in the trailing 24 months, suggesting the category is moving past the exploratory phase and into scaled deployment. Geographically, North America leads by a significant margin, while Israel’s figures largely reflect Decart’s four compounding raises.

Decart’s $300m round leads the five largest AI-gaming infrastructure raises since 2024 by a wide margin, at more than twice the size of RayNeo’s $143m funding and General Intuition’s $133.7m Seed round. The remaining cohort spans hardware, world models, audio, and cloud infrastructure across four geographies, underscoring that scaled capital is now reaching every layer of the AI-gaming stack. We will continue to monitor this category as late-stage concentration deepens.