Sakana AI, the Tokyo lab last valued at $2.65 billion, is recruiting beta testers for its first mobile app, according to a post on X on 9 November. Applications close on 15 November at 23:59, six days after the post, by our count.
The app is called “Sakana AI App (tentative name)” and is “currently in development”, in our translation of the Japanese post. The post gives no features, platforms or launch date.
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The key insight: Sakana AI, valued at $2.65 billion post-money at its November 2025 Series B per TechCrunch, posted on 9 November that it is recruiting beta testers for its first mobile app, with applications closing on 15 November, six days later by our count.
In its post, Sakana AI wrote that it is “recruiting testers for Sakana AI’s first mobile app” and that it wants to use tester feedback to “improve it into an app that is easier to use and more convenient”. The post links a sign-up form and gives the deadline as “November 15, 23:59” without a time zone.
The image in the post shows a white app icon with Sakana’s red line-drawn fish logo next to the words “Sakana AI App”. It shows no screens. The post had about 107,000 views when we read it.
Sakana AI posted in Japanese on 9 November that it is recruiting beta testers for its first mobile app, the Sakana AI App (tentative name), with applications closing on 15 November at 23:59. The post links a sign-up form and does not describe the app’s features.
Where Sakana Sells Today
Sakana’s homepage lists four product lines: Sakana Fugu, which it describes as “One model that orchestrates the world’s best LLMs”; Sakana Namazu, “The best LLM for Japanese, at a reasonable price”; Sakana Marlin, a research agent for M&A consultants and strategy teams; and Sakana Translate.
The same page already offers Sakana Chat and Sakana Translate on the web. Its enterprise text names MUFG Bank, SMBC Group and Daiwa Securities Group in finance, and the Ministry of Defense, ATLA and the Ministry of Internal Affairs and Communications in defense and intelligence: six named partners, by our count.
The Funding Behind It
Sakana closed a “¥20 billion (approximately $135 million) Series B funding round, which values the company at $2.65 billion post-money”, CEO David Ha told TechCrunch in November 2025. Investors named included MUFG, Khosla Ventures, Macquarie Capital, NEA, Lux Capital and In-Q-Tel.
TechCrunch reported that the earlier Series A raised about ¥30 billion ($214 million) at a $1.5 billion valuation. The Series B value was about 1.8 times that figure, by our arithmetic.
As we read the post, it is a tester call rather than a launch: it names the app only as “Sakana AI App (tentative name)” and gives no features, platforms or release date.
As we read Sakana’s homepage, the company’s listed work so far centres on models, research agents and enterprise deployments, with six named finance and government partners by our count, alongside Sakana Chat and Sakana Translate on the web.
Sakana AI on X, 9 November 2026 (our translation)
“We are recruiting testers for Sakana AI’s first mobile app”
Three Implications
FOR TESTERS Sign-ups close on 15 November at 23:59; the post does not state the time zone.
FOR THE PRODUCT LINE Sakana’s homepage lists Fugu, Namazu, Marlin and Translate; the post does not say which of them, if any, the app uses.
FOR THE FUNDING CONTEXT The $2.65 billion valuation is from November 2025, about 1.8 times the $1.5 billion Series A valuation TechCrunch reported, by our arithmetic.
The framework says: “The second curve is product capability — what users of your specific product can actually do, end-to-end, in production.”
As we read it, a beta tester call is a step on that second curve: Sakana’s post asks users for feedback to make the app “easier to use and more convenient”, in our translation, before any launch date is set.
What Is Not Established
The post does not say what the app does, which models it uses, which platforms it runs on, when it will launch or whether it will be free. It does not state the time zone of the deadline. The valuation figures date from November 2025, and no later round is reported in the sources we read.
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Sakana AI, valued at $2.65 billion in November 2025 and known for research and enterprise work with Japanese banks and government agencies, is taking beta testers for its first mobile app until 15 November.
A note on sourcing. Sakana AI’s post on X was read in Japanese on 9 November 2026; the English quotations are our translation. Product and partner details are from Sakana’s homepage as read the same day. Funding figures are from TechCrunch’s 17 November 2025 report quoting CEO David Ha. The day count, partner count and valuation multiple are ours.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
