Sakana AI

Sakana AI is a Tokyo-based AI R&D company founded by ex-Google researchers focused on collective intelligence, evolutionary optimization, and nature-inspired AI methods. The company's first commercial product is Sakana Fugu - a multi-agent orchestration system with an OpenAI-compatible API (currently in beta). Sakana also publishes Sakana Chat (consumer) and Sakana Marlin (beta).

Sakana AI is listed with 1 API on the APIs.io network. Tagged areas include Artificial Intelligence, LLM, Research, Foundation Models, and Multi-Agent.

Sakana AI’s developer surface includes GitHub presence and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

9.8/100 minimal ▬ flat Agent 1/100 human only Front door AI 4/6 moderate Heartbeat 84/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFree

1 API

Artificial Intelligence LLM Research Foundation Models Multi-Agent Orchestration

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 9.8/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 0.9 / 17

Operational Transparency 2.3 / 11

Contract Governance 0.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 2.4 — up to +19.5 composite points
Access Clarity scores 5.3 — up to +18.9 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/sakana-ai/apis.yml: open an issue on github.com/api-evangelist/sakana-ai to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Hugging Face Hub Organisations	covered	51.7	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Sakana Fugu API (Beta)

Multi-agent orchestration system that routes tasks across frontier foundation models (OpenAI, Anthropic, Google). OpenAI-compatible API surface. Two variants - Fugu Mini (low-la...

Sakana AI API pricing

Not yet checked against Sakana AI's own pricing page. Compiled by API Evangelist on 2026-05-08 from sakana.ai/; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Fugu Beta (Application Only) beta	—
Open-Weight Research Models free	Free

Plan details, limits and sources →

Rate limits

Beta Default: see beta enrollment requests per minute

Compiled by API Evangelist, not yet checked against Sakana AI's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Sakana Ai Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sakana Ai Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Sakana Ai Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Sakana Ai Domain Security

TLSv1.3 · DMARC

SECURITY

Sakana Ai Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

HuggingFace

HuggingFace

Source (apis.yml)

aid: sakana-ai
url: https://raw.githubusercontent.com/api-evangelist/sakana-ai/refs/heads/main/apis.yml
name: Sakana AI
kind: company
description: Sakana AI is a Tokyo-based AI R&D company founded by ex-Google researchers focused on collective intelligence,
  evolutionary optimization, and nature-inspired AI methods. The company's first commercial product is Sakana Fugu - a multi-agent
  orchestration system with an OpenAI-compatible API (currently in beta). Sakana also publishes Sakana Chat (consumer) and
  Sakana Marlin (beta).
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Free
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sakana-ai.png
tags:
- Artificial Intelligence
- LLM
- Research
- Foundation Models
- Multi-Agent
- Orchestration
tags_raw:
- AI
- LLM
- Research
- Foundation Models
- Multi-Agent
- Orchestration
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.23'
apis:
- aid: sakana-ai:fugu
  name: Sakana Fugu API (Beta)
  description: Multi-agent orchestration system that routes tasks across frontier foundation models (OpenAI, Anthropic, Google).
    OpenAI-compatible API surface. Two variants - Fugu Mini (low-latency) and Fugu Ultra (high performance). Beta access required.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://sakana.ai/
  baseURL: https://api.sakana.ai
  tags:
  - Artificial Intelligence
  - LLM
  - Multi-Agent
  - Orchestration
  - OpenAI-Compatible
  - Beta
  tags_raw:
  - AI
  - LLM
  - Multi-Agent
  - Orchestration
  - OpenAI Compatible
  - Beta
  properties:
  - type: ProductPage
    url: https://sakana.ai/
  - type: BetaSignup
    url: https://sakana.ai/
  - type: GitHub
    url: https://github.com/SakanaAI
  - type: HuggingFace
    url: https://huggingface.co/SakanaAI
  - type: Blog
    url: https://sakana.ai/blog/
common:
- type: VulnerabilityDisclosure
  url: security/sakana-ai-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/sakana-ai-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/sakana-ai
- type: Website
  url: https://sakana.ai/
- type: GitHub
  url: https://github.com/SakanaAI
- type: HuggingFace
  url: https://huggingface.co/SakanaAI
- type: Plans
  url: plans/sakana-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sakana-ai-rate-limits.yml
- type: FinOps
  url: finops/sakana-ai-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Sakana AI API — frequently asked questions

Does Sakana AI have an API?

Yes. APIs.io lists 1 API from Sakana AI, including Sakana Fugu API (Beta).

How much does the Sakana AI API cost?

APIs.io lists 2 pricing plans for Sakana AI, with each plan's price, limits and inclusions under Pricing on this page.

Is the Sakana AI API ready for AI agents?

Sakana AI has a Kin Score of 9.8 out of 100 (minimal) and an Agent Readiness score of 0.6 (human-only), scored by API Evangelist on 2026-11-06.

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get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
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