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Sakana AI

What Sakana AI does

Sakana AI is a Tokyo-based Frontier AI R&D company founded in 2023 that focuses on “nature-inspired” approaches to model development and autonomous AI science. Its positioning blends (1) frontier research into architectures and systems (e.g., evolutionary/model-merge methods and agentic automation for research) with (2) applied, productized deployment and enterprise/government implementation in Japan.

On the product side, Sakana AI offers user-facing and API-based AI tools built around two themes: Japanese-context adaptation and multi-model orchestration. Sakana Chat is a web chat experience centered on its Namazu model, while Sakana Fugu is an orchestration model intended to coordinate multiple models via a single model/API interface. Sakana Marlin is positioned as a long-horizon research assistant for business strategy work, and Sakana Translate provides translation capabilities through Namazu. The company also emphasizes reliability/observability and enterprise operations partnerships (e.g., Datadog) as it scales from lab outputs into deployable systems.

Business model-wise, Sakana AI appears to monetize through a mix of (a) API access to models (including Fugu and Namazu) and (b) subscription/free consumer web access for some products (e.g., Sakana Chat/Sakana Translate) with an additional enterprise/government delivery track via its Applied organization.

News

Company record

Aug 13, 2026 · Official · Sakana AISakana Chat gets a major update: incorporating Fugu and new Namazu model with code execution

Sakana AI updated Sakana Chat to add Sakana Fugu and refreshed Sakana Namazu, and introduced code execution with in-interface preview of model-generated outputs, plus support for image/document attachments.

Jul 31, 2026 · Official · Sakana AIFrom Japan, Products the World Will Use (Interview with Head of Product Development)

Sakana AI published an interview describing the product roadmap and how Sakana’s product team ships multiple releases in sequence: Sakana Chat (Namazu) followed by Sakana Marlin, Sakana Fugu, and Sakana Translate.

Jul 06, 2026 · Official · Sakana AISakana Translate added to Sakana Chat (translation, editing, and Q&A)

Sakana AI added Sakana Translate functionality to Sakana Chat, with three modes (translation, editing, and Q&A) and Namazu-based translation for Japanese/English/Chinese directions.

Jun 22, 2026 · Official · Sakana AISakana Fugu released as a multi-agent orchestration system via a single model API

Sakana AI announced Sakana Fugu / Fugu Ultra release, positioning Fugu as a single orchestration-model interface that dynamically orchestrates an agent pool of models to achieve frontier-level performance while avoiding single-vendor dependency.

Jun 15, 2026 · Official · Sakana AISakana AI launches its first commercial product, Sakana Marlin

Sakana AI announced the launch of Sakana Marlin, describing it as an autonomous business research assistant capable of running for up to roughly 8 hours and producing structured deliverables; it also notes a closed beta and “around 300 beta testers.”

Mar 26, 2026 · Official · Sakana AIThe AI Scientist: Towards Fully Automated AI Research, published in Nature

Sakana AI announced that a paper describing The AI Scientist system and new insights was published in Nature, and described the system’s end-to-end machine learning research lifecycle automation and a constructed automated reviewer for evaluation.

Mar 13, 2026 · Official · Sakana AISakana AI begins commissioned research with Japan’s Defense Innovation Science & Technology Laboratory

Sakana AI announced a multi-year commissioned research contract focused on accelerating observation, reporting, information integration, and resource allocation through combinations of AI technologies, including small visual-language models for edge execution.

Mar 06, 2026 · Official · Sakana AISakana AI and MUFG advance “AI Lending Expert” to real-case validation

Sakana AI and Mitsubishi UFJ Bank (MUFG) moved their AI agent concept proof-of-concept into real-case validation with staged plans for broader rollout in MUFG branches.

Show 4 earlier updates
Feb 26, 2026 · Official · Sakana AIAnnouncing a strategic partnership with Datadog

Sakana AI announced a strategic partnership with Datadog focused on joint research initiatives and go-to-market efforts, explicitly tying the collaboration to observability and security for enterprise AI systems.

Nov 17, 2025 · Official · Sakana AIAnnouncing Our Series B

Sakana AI announced its Series B funding round, including the total raise, post-money valuation, and a long list of new and existing investors.

Sep 04, 2024 · Official · Sakana AIAnnouncing Our Series A

Sakana AI announced its Series A funding round and listed the lead investors and multiple Japanese strategic investors.

Jan 16, 2024 · Official · Sakana AIWe raised $30M to develop nature-inspired AI in Japan (Seed)

Sakana AI announced a $30M seed round led by Lux Capital, with backing from Khosla Ventures and multiple global and Japan investors.

Source map · 2 recurring channels · 19 references

Still resolving: Newsroom · Official X

Funding

Latest disclosed valuation$2.7B
Tracked capital$430M4 sourced rounds

What it builds

Sakana Chat

Sakana Chat is a web-based chat experience built around Sakana’s Namazu model, intended to deliver a ChatGPT/Claude-like experience in the Japanese context; the product has been updated to add Sakana Fugu and code execution capabilities.

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Sakana Marlin

Sakana Marlin is an autonomous research assistant for business strategy work, designed to run for extended time horizons and generate structured deliverables such as summary slides and multi-page reports.

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Sakana Fugu

Sakana Fugu is an orchestration product delivered as a “single foundation model” interface that dynamically orchestrates an agent pool of frontier models to handle complex multi-step tasks, accessible via Sakana’s API.

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Sakana Translate

Sakana Translate is a translation feature/product integrated with the Sakana Chat experience, supporting translation, editing, and Q&A modes and using Sakana’s Namazu-based model series for bilingual translation.

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Milestones & partnerships

Aug 13, 2026
Sakana Chat added Fugu + code execution

Sakana Chat was updated to include Sakana Fugu and a refreshed Sakana Namazu generation, plus code execution and deliverable preview within the chat UI.

Jun 22, 2026
Released Sakana Fugu / Fugu Ultra

Sakana AI released Sakana Fugu and Fugu Ultra as an orchestration model accessible through a single model/API interface.

Jun 15, 2026
Launched Sakana Marlin (commercial product)

Sakana AI launched Sakana Marlin as an autonomous research assistant for business strategy, built on its long-horizon reasoning technology and tuned through a closed beta.

Mar 26, 2026
The AI Scientist paper published in Nature

Sakana AI announced that its Nature publication covers The AI Scientist system architecture, scaling results, and evaluation of AI-generated science.

University of British Columbia · Vector Institute · University of Oxford
Mar 13, 2026
Defense Innovation Science & Technology Laboratory commissioned research starts

Sakana AI entered a commissioned research contract with Japan’s defense R&D laboratory on AI integration for multi-domain observation/reporting/resource allocation and C2 system advancement.

防衛装備庁防衛イノベーション科学技術研究所
Mar 06, 2026
MUFG AI Lending Expert moved to real-case validation

Sakana AI and MUFG advanced their lending-support AI agent into validation on real cases and described a staged plan for broader rollout.

Mitsubishi UFJ Bank (MUFG)
Feb 26, 2026
Strategic partnership with Datadog announced

Sakana AI and Datadog announced a partnership focused on observability/security and enterprise operationalization of advanced AI systems.

Datadog
Jan 16, 2024
Seed financing: $30M raised

Sakana AI announced $30M seed funding led by Lux Capital to develop nature-inspired AI in Japan.