Sakana AI is a Tokyo-based AI R&D company building foundation models with nature-inspired methods. It focuses on model merging, evolutionary algorithms, and automated scientific discovery for machine learning research.
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Sakana AI shares are not on public exchanges. UpMarket provides accredited investors access through secondary market transactions.
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| Date | Round | PPS (split-adj.) | Valuation |
|---|---|---|---|
| 2024 | Series A |
Latka says Sakana AI reached $30M in revenue in 2025 and was valued at $2.6B in its Series B round. The company has raised $365M across 3 rounds, including a $135M Series B in 2025.
AWS describes Sakana AI as using evolution-inspired methods to build frontier models from pre-existing ones, with model merging as a key breakthrough. The company has run experiments where the highest-scoring models survive for a few hundred generations.
Sakana AI’s website lists product offerings including Sakana Chat, Sakana Marlin, and Sakana Fugu, alongside research and solution pages for finance and defense/intelligence. This indicates the company is moving from pure research into packaged offerings.
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No. As of March 2026, Sakana AI is a private company and does not trade on any public stock exchange. Accredited investors can access Sakana AI shares through UpMarket, a FINRA-registered broker-dealer that specializes in pre-IPO investments.
Sakana AI does not have a public stock price because it is privately held. The most recent known share price comes from its last funding round. Pre-IPO share prices on the secondary market may differ from the last round price depending on supply, demand, and market conditions.
Yes. Accredited investors can indicate interest in Sakana AI shares through UpMarket by filling out the form on this page or creating an account at upmarket.co. All pre-IPO offerings are subject to availability and require a $50,000 minimum investment. UpMarket is a FINRA-registered broker-dealer and has brokered more than $500M in alternative investments since 2019.
Pre-IPO investments carry significant risks. Sakana AI shares are illiquid, meaning there is no public market to sell them quickly. There is no guaranteed exit timeline or return. The investment is speculative in nature, and investors should be prepared for the possibility of total loss. Valuations of private companies can fluctuate substantially between funding rounds. Investors should consult their financial advisor and review all offering documents before investing.
In a pre-IPO transaction, accredited investors purchase shares from existing shareholders (such as employees, early investors, or other holders) through secondary market platforms. The company itself does not issue new shares in these transactions. UpMarket facilitates these trades as a FINRA-registered broker-dealer, handling compliance, documentation, and settlement on behalf of both parties.
There are two primary exit paths for pre-IPO holdings: selling your shares on the secondary market to another buyer, or holding until the company completes an IPO or is acquired. Both paths are subject to transfer restrictions, company approval (right of first refusal), and market conditions. The timing of any exit is unpredictable, and investors should plan for a multi-year holding period.
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UpMarket's valuation estimate of is derived from a proprietary model that incorporates multiple data sources: funding round data (Caplight), revenue estimates (Sacra), secondary market pricing, and public company comparables. The model applies a private company discount to the public comp multiple to account for illiquidity and information asymmetry. This estimate is not investment advice and may differ substantially from the price at which shares actually trade.
Sakana AI is a Tokyo-based AI R&D company building foundation models with nature-inspired methods, including model merging, evolutionary algorithms, and automated scientific discovery, and reached $30M ARR with a $2.6B valuation in 2025 — accredited investors can access Sakana AI stock through UpMarket.