Startup

Sakana AI logoSA

Sakana AI

Sakana AI株式会社

AI

#1 in the Japan Top 100 Startups

Founded / HQ2023 · Tokyo
Cumulative raised¥66B
“累計調達額は総額約660億円(4億1,200万米ドル)”
Company-stated cumulative · as of 9 Apr 2026 · Sakana AI
Yen figures converted by the company at ¥160/$.
Last round9 Apr 2026 · Series B (extension) · ¥12B
シリーズB総額約320億円(2025年11月17日発表時は約200億円、2026年4月9日更新)
Latest public valuation¥432Bcompany-disclosed
Post-money 約4,320億円(27億米ドル) · 9 Apr 2026 · Sakana AI
Key investorsMUFG, Khosla Ventures, NEA, Lux Capital, Factorial Funds, Macquarie Capital
UnicornYes
Websitesakana.ai

From Japanese sources

Findings from Japanese-language filings, government records, trade press, interviews and job posts, with our English analysis. Items tagged Japanese-only had no English coverage when we checked quickly. Most insightful first.

2026-08-24GovernmentJapanese-onlySakana AI wins MoD contract to study and test AI for intelligence analysis
Sakana AI、防衛省から「総合分析業務に必要なAI機能の調査・実証」を受注

This is the second defence contract, signed on 29 Jul 2026 under the MoD's startup technology-proposal scheme. The first was a command-and-control (C2) research contract. This one targets strategic intelligence analysis for the Defense Intelligence Headquarters (情報本部), which shows Sakana moving from battlefield C2 work up to analysis that supports national-level policy decisions. A proper government revenue line is forming.

Source: Sakana AI (JP release)
2026-10-17Hiring signalJapanese-onlySakana AI recruits an internal auditor and accountants
Internal Auditor / Accountant(Sakana AI採用)

The internal-audit role asks for 3+ years of audit, internal-control and risk experience, with Japanese-language interviews. An internal-audit function is a standard step in preparing for a Japanese IPO. Separate defence roles (Forward Deployed Engineer, System Infrastructure Architect) on Workable may require Japanese nationality and security clearance.

Source: Sakana AI careers
2026-03-13GovernmentSakana AI starts multi-year ATLA research on AI for faster command and control
Sakana AI、防衛イノベーション科学技術研究所からの委託研究を開始

ATLA's published contract list puts the deal at ¥965M (signed 10 Feb 2026). It was awarded through a competitive proposal process under the DARPA-style 'Breakthrough Empirical Research' programme. For a two-year-old AI lab, a near-¥1B single government contract is a large and sticky revenue source.

Source: Sakana AI (JP release)
2025-03-13Exec interviewJapanese-onlySakana AI's 'Level 3': from replacing people to surpassing them (Ren Ito interview)
今後のAIは人間代替から人間超越へ、Sakana AIが見据える「レベル3」

COO Ren Ito lays out the thesis that 'bigger is better' scaling is ending. He presents evolutionary model merging (Mar 2024) and the TAID distillation method (Jan 2025) as proof that smaller, cheaper customer models can win. This is the strategic framing behind the company's enterprise and government deals.

Source: Nikkei xTECH

Overview

Sakana AI is a Tokyo AI research lab founded in 2023 by former Google researchers David Ha and Llion Jones (a co-author of the Transformer paper) with ex-Mercari executive Ren Ito. It builds 'nature-inspired' AI: evolutionary model merging, self-improving agents such as the AI Scientist, and its Fugu orchestration and Namazu Japanese-language models. Revenue comes from multi-year enterprise and government contracts, mostly with Japan's megabanks (MUFG, SMBC), Daiwa Securities and the defence establishment (Ministry of Defense, ATLA). Its November 2025 Series B (extended in April 2026) took cumulative funding to about ¥66B at a company-stated ¥432B post-money valuation.

Built from: Sakana AI homepage · Series B release

Company timeline

Founded

Date2023-07· Sakana AI corporate info
FoundersDavid Ha, Llion Jones, Ren Ito
OriginTwo ex-Google Brain/Research scientists set up a Tokyo lab to pursue evolution- and collective-intelligence-based AI instead of scaling one giant model.

Funding

DateRoundAmountLead / key investorsSource
2024-01-16Seed$30MLux Capital, Khosla VenturesSakana AI
2024-09-04Series A≈$200M (≈¥30B incl. Japanese corporates)
シリーズAとして合計で約300億円
NEA, Khosla Ventures, Lux CapitalSakana AI
2025-11-17Series B≈¥20B at announcement
シリーズB 約200億円(2025年11月17日発表時)
MUFGSakana AI
2026-04-09Series B (extension)total ≈¥32B
シリーズB総額約320億円(2026年4月9日更新)
MUFG, Khosla Ventures, NEA, Lux CapitalSakana AI

Key hires & board

2024-01-16Founding teamFounding researchers include Takuya Akiba (ex-Preferred Networks, Stability AI), Yujin Tang and Robert Lange (ex-Google DeepMind)· Sakana AI

Milestones

2024-01-16PartnershipR&D partnership with NTT Group announced with the seed round· Lux Capital
2024-09-04PartnershipResearch and infrastructure collaboration with NVIDIA· Sakana AI
2026-03-06CustomerAI lending expert built with MUFG Bank enters live-loan validation· Sakana AI
2026-03-13GovernmentCommissioned research from ATLA (Ministry of Defense acquisition agency)· Sakana AI
2026-03-26Research"The AI Scientist" published in Nature· Sakana AI
2026-04-30CustomerMulti-agent proposal-generation app with SMBC Group· Sakana AI
2026-08-05CustomerWealth-management AI project with Daiwa Securities moves to full scale· Sakana AI
2026-08-24GovernmentContracted by the Ministry of Defense for integrated-analysis study· Sakana AI
2026-09-25AwardMinister for Internal Affairs Award, Japan Startup Awards 2026· Sakana AI

News

2026-09-25Sakana AI wins the MIC Minister Award at the Japan Startup Awards 2026
Sakana AI、「日本スタートアップ大賞2026」で総務大臣賞(情報通信分野)を受賞· Sakana AI
2026-08-24Integrated analysis for the Ministry of Defense· Sakana AI
2026-08-05Wealth management AI with Daiwa Securities Group enters full-scale phase· Sakana AI
2026-04-30Proposal generation for SMBC Group· Sakana AI
2026-03-26The AI Scientist published in Nature· Sakana AI
2026-03-13Commissioned research from ATLA· Sakana AI
2026-03-06AI Lending Expert with MUFG Bank· Sakana AI
2025-11-17Series B announcement (updated April 2026)· Sakana AI
2024-09-17Series A follow-up: Japanese corporates join, ≈¥30B total
シリーズA【続報】:日本のリーディングカンパニーから資金を調達· Sakana AI
2024-01-16Top ex-Google researchers raise $30 mln for Tokyo-based AI lab· Reuters

See all news on the company site →

Founder profiles: David Ha, Llion Jones, Ren Ito

Funding rounds in 2026

Grey amounts aren't counted in totals. † includes debt or other non-equity.

DateCompanyStageAmountInvestorsSector
9 Apr 2026 Sakana AI logoSASakana AI Series B (extension) ¥12B Mitsubishi UFJ Financial GroupKhosla VenturesFactorial Funds +17 AIDeep tech