xAI

xAI is an AI research lab founded by Elon Musk. The xAI API exposes Grok foundation models for chat, function calling, vision, voice, image generation, and video generation, alongside research outputs from the Colossus training supercluster.

xAI publishes 1 API on the APIs.io network: v1 API. Tagged areas include Artificial Intelligence, LLM, Foundation Models, Grok, and Generative AI.

The xAI catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

xAI’s developer surface includes authentication, documentation, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

34.9/100 thin ▬ flat Agent 26/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessPaid

1 APIs

Artificial Intelligence LLM Foundation ModelsGrokGenerative AI

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 34.9/100 · thin

Contract Quality 14.0 / 23

Developer Ergonomics 5.1 / 18

Access Clarity 4.3 / 18

Operational Transparency 1.2 / 12

Contract Governance 1.2 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 26/100 · 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 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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

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.

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 github.com/api-evangelist/xai: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

xAI v1 API

The v1 API from xAI — 30 operation(s) for v1.

Open Collections 3

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

API Collection

OPEN COLLECTION

xAI's REST v1 API

OPEN COLLECTION

xAI's REST API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Xai Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Xai Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Xai Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

xAI Realtime WebSocket APIs

AsyncAPI 2.6 description of xAI's documented WebSocket APIs: - Real-time Speech-to-Text (STT) streaming at wss://api.x.ai/v1/stt - Voice Agent (bidirectional speech-to-speech) a...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

xAI API Rules

8 rules · 1 errors 7 warnings

SPECTRAL

Security Posture 4

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

Xai Authentication

http · 1 scheme

SECURITY

Xai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Xai Vulnerability Disclosure

security.txt · contact published

SECURITY

Xai Trust Center

HIPAA, GDPR

SECURITY

Agentic Access 1

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

Xai Agentic Access

33 operations · 16 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

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

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 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: xai
url: https://raw.githubusercontent.com/api-evangelist/xai/refs/heads/main/apis.yml
name: xAI
kind: company
description: xAI is an AI research lab founded by Elon Musk. The xAI API exposes Grok foundation models for chat, function
  calling, vision, voice, image generation, and video generation, alongside research outputs from the Colossus training supercluster.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/xai.png
tags:
- Artificial Intelligence
- LLM
- Foundation Models
- Grok
- Generative AI
tags_raw:
- AI
- LLM
- Foundation Models
- Grok
- Generative AI
created: '2026-05-08'
modified: '2026-05-29'
specificationVersion: '0.23'
apis:
- aid: xai:xai-v1-api
  name: xAI v1 API
  description: The v1 API from xAI — 30 operation(s) for v1.
  humanURL: https://docs.x.ai/docs/api-reference
  baseURL: https://api.x.ai/v1
  tags:
  - v1
  properties:
  - type: OpenAPI
    url: openapi/xai-v1-api-openapi.yml
  - type: Documentation
    url: https://docs.x.ai/docs/overview
  - type: APIReference
    url: https://docs.x.ai/docs/api-reference#chat-completions
  - type: Documentation
    url: https://docs.x.ai/docs/api-reference#responses
  - type: Documentation
    url: https://docs.x.ai/docs/guides/image-generations
  - type: APIReference
    url: https://docs.x.ai/docs/api-reference#image-generations
  - type: Documentation
    url: https://docs.x.ai/docs/guides/video-generation
  - type: Documentation
    url: https://docs.x.ai/docs/guides/voice
  - type: AsyncAPI
    url: asyncapi/xai-asyncapi.yml
  - type: Documentation
    url: https://docs.x.ai/docs/guides/embeddings
  - type: Documentation
    url: https://docs.x.ai/docs/api-reference#models
  - type: Documentation
    url: https://docs.x.ai/docs/guides/batch
common:
- type: AgenticAccess
  url: agentic-access/xai-agentic-access.yml
- type: TrustCenter
  url: security/xai-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/xai-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/xai-domain-security.yml
- type: Authentication
  url: authentication/xai-authentication.yml
- type: GitHubOrganization
  url: https://github.com/xai-org
- type: LinkedIn
  url: https://www.linkedin.com/company/x-ai
- type: Website
  url: https://x.ai/
- type: Documentation
  url: https://docs.x.ai/
- type: Plans
  url: plans/xai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/xai-rate-limits.yml
- type: FinOps
  url: finops/xai-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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