01.AI

01.AI, founded by Kai-Fu Lee, is the creator of the Yi family of open-source and proprietary LLMs. The Lingyiwanwu open platform exposes OpenAI-compatible inference for Yi-Lightning, Yi-Lightning-Lite, Yi-Large, and Yi-Vision.

01.AI publishes 2 API contracts indexed on the APIs.io network, including Chat Completions API, and 1 more. Tagged areas include Artificial Intelligence, LLM, Yi, Open Source, and Foundation Models.

The 01.AI catalog on APIs.io includes 1 Spectral governance ruleset.

01.AI’s developer surface includes authentication, documentation, GitHub presence, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.2/100 thin ▬ flat Agent 18/100 agent aware Front door AI 6/6 dominant Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Artificial Intelligence LLMYiOpen Source Foundation Models Inference

Kin Score

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

Composite quality — 31.2/100 · thin

Contract Quality 9.6 / 19

Developer Ergonomics 3.6 / 15

Access Clarity 4.3 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 18/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/01-ai/"><img src="https://apis.io/badge/01-ai/card.svg" alt="01.AI on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 23.8 — up to +15.2 composite points
Access Clarity scores 28.9 — up to +14.2 composite points
Contract Quality scores 51.4 — up to +12.2 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/01-ai/apis.yml: open an issue on github.com/api-evangelist/01-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	34.5 (thin)	-	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.

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

The OpenAI Interface

declared — publishes a spec that declares them

2 core of 338 operations graded · api-commons/models

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

Lingyiwanwu Platform API

OpenAI-compatible chat completions and vision endpoints for the Yi model family. Base URL https://api.lingyiwanwu.com/v1. Available models include Yi-Lightning, Yi-Lightning-Lit...

01.AI Chat Completions API

OpenAI-compatible chat completions for Yi text and vision models.

Open Collections 2

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Lingyiwanwu Platform Chat API

OPEN COLLECTION

Lingyiwanwu Platform API

OPEN COLLECTION

01.AI API pricing

Not yet checked against 01.AI's own pricing page. Compiled by API Evangelist on 2026-05-08 from platform.lingyiwanwu.com/; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Pay As You Go usage	—
Self-Hosted (Open Weights) free	Free

Plan details, limits and sources →

Rate limits

Default: see platform console requests per minute

Compiled by API Evangelist, not yet checked against 01.AI's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

01 Ai Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

01 Ai Rate Limits

1 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

01.AI

SLA

FinOps 1

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

01 Ai Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

01.AI API Rules

40 rules · 38 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

01 Ai Authentication

http · 1 scheme

SECURITY

01 Ai Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

01 Ai Agentic Access

1 operation · 1 acting

1 operations · 1 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

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 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Review

Review

Source (apis.yml)

aid: 01-ai
url: https://raw.githubusercontent.com/api-evangelist/01-ai/refs/heads/main/apis.yml
name: 01.AI
kind: company
description: 01.AI, founded by Kai-Fu Lee, is the creator of the Yi family of open-source and proprietary LLMs. The Lingyiwanwu
  open platform exposes OpenAI-compatible inference for Yi-Lightning, Yi-Lightning-Lite, Yi-Large, and Yi-Vision.
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - 01-ai/yi
  open_source: unknown
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/01-ai.png
tags:
- Artificial Intelligence
- LLM
- Yi
- Open Source
- Foundation Models
- Inference
tags_raw:
- AI
- LLM
- Yi
- Open Source
- Foundation Models
- Inference
- Open-Source
created: '2026-05-08'
modified: '2026-05-29'
specificationVersion: '0.23'
apis:
- aid: 01-ai:platform
  name: Lingyiwanwu Platform API
  description: OpenAI-compatible chat completions and vision endpoints for the Yi model family. Base URL https://api.lingyiwanwu.com/v1.
    Available models include Yi-Lightning, Yi-Lightning-Lite, Yi-Large, Yi-Large-Turbo, and Yi-Vision.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://platform.lingyiwanwu.com/docs
  baseURL: https://api.lingyiwanwu.com/v1
  tags:
  - Artificial Intelligence
  - LLM
  - Chat Completions
  - Vision
  - OpenAI-Compatible
  - Yi
  tags_raw:
  - AI
  - LLM
  - Chat Completions
  - Vision
  - OpenAI Compatible
  - Yi
  properties:
  - type: Documentation
    url: https://platform.lingyiwanwu.com/docs
  - type: Signup
    url: https://platform.lingyiwanwu.com/
  - type: GitHub
    url: https://github.com/01-ai/Yi
  - type: TechBlog
    url: https://01-ai.github.io/
  - type: Pricing
    url: https://platform.lingyiwanwu.com/
- aid: 01-ai:01-ai-chat-completions-api
  name: 01.AI Chat Completions API
  description: OpenAI-compatible chat completions for Yi text and vision models.
  humanURL: https://platform.lingyiwanwu.com/docs
  baseURL: https://api.lingyiwanwu.com/v1
  tags:
  - Chat Completions
  properties:
  - type: OpenAPI
    url: openapi/01-ai-chat-completions-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/01-ai-agentic-access.yml
- type: DomainSecurity
  url: security/01-ai-domain-security.yml
- type: Authentication
  url: authentication/01-ai-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/01-ai
- type: Website
  url: https://www.01.ai/
- type: Documentation
  url: https://platform.lingyiwanwu.com/docs
- type: GitHub
  url: https://github.com/01-ai
- type: Plans
  url: plans/01-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/01-ai-rate-limits.yml
- type: FinOps
  url: finops/01-ai-finops.yml
- type: Review
  url: review.yml
- url: https://www.lingyiwanwu.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

01.AI API — frequently asked questions

Does 01.AI have an API?

Yes. APIs.io lists 2 APIs from 01.AI, including Lingyiwanwu Platform API and 01.AI Chat Completions API.

Is there an OpenAPI specification for the 01.AI API?

Yes. APIs.io indexes 1 OpenAPI specification for 01.AI, each linked for download from this page.

How do I authenticate with the 01.AI API?

01.AI uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as 01 Ai Authentication.

How much does the 01.AI API cost?

APIs.io lists 2 pricing plans for 01.AI, with each plan's price, limits and inclusions under Pricing on this page.

Is the 01.AI API ready for AI agents?

01.AI has a Kin Score of 31.2 out of 100 (thin) and an Agent Readiness score of 17.9 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
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.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/01-ai"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/01-ai/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/01-ai/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.