From Tokyo to the World: Inside the $2.65B Startup Redrawing the Map for Sovereign AI

Tokyo-based Sakana AI has raised a $135 million Series B round at a $2.65 billion post-money valuation, cementing its position as one of Japan’s flagship AI startups. The round comes just about a year after its Series A and lifts total funding to roughly $335 million, a rapid step-up that shows strong investor conviction in the company’s “AI for Japan” thesis. The new capital was provided by a blend of domestic financial heavyweights and global venture firms, including Mitsubishi UFJ Financial Group (MUFG)Dealroom has a profile for this one. Try Dealroom →, Khosla Ventures, Macquarie CapitalDealroom has a profile for this one. Try Dealroom →, NEA, Lux Capital and In-Q-Tel, alongside other institutional backers.

Sakana AI is building generative AI models that are expressly tuned for the Japanese language, culture and business environment, targeting enterprises and public institutions that need models aligned with local norms and constraints rather than generic global systems. Its technology emphasizes efficiency: instead of training ever-larger foundation models from scratch, the company is known for techniques like evolutionary model merging, multi-model orchestration and post-training optimization on top of existing models. This focus dovetails with Japan’s “sovereign AI” ambitions—developing AI that reflects national values and can be run sustainably in a country with limited compute resources and an aging workforce.

Founded in 2023 by former Google researchers Llion JonesDealroom has a profile for this one. Try Dealroom →, Ren ItoDealroom has a profile for this one. Try Dealroom → and David HaDealroom has a profile for this one. Try Dealroom →, the startup has quickly assembled a world-class research team in Tokyo and started turning its R&D into real deployments. The company has pioneered approaches such as self-improving architectures like the Darwin Gödel Machine, the AI Scientist system for automating parts of AI research, and energy-efficient language models that can run on edge devices—illustrating its belief that the future of AI lies in doing more with less. On the applied side, Sakana AI has already built a healthy enterprise business, partnering with major Japanese institutions including MUFG and Daiwa Securities to roll out AI-enabled business applications with a clear return on investment.

With the Series B in place, Sakana AI plans to accelerate both frontier research and real-world implementation. The company intends to expand its engineering, sales and distribution teams in Japan, deepen its work in finance, and push into sectors such as industrial manufacturing, defense, intelligence and government, while also exploring strategic investments, partnerships and M&A to support long-term global growth. For Japan’s AI ecosystem, this raise is not just another large round; it’s a signal that a homegrown, sustainability-focused approach to sovereign AI can attract serious global capital and may help define how advanced AI is developed and deployed in resource-constrained environments.

Sources: TechCrunch
                   Sakana AI

M.A.