Introduction

Aion Labs provides AI models through an OpenAI-compatible REST API.

LLM API

A versioned API at /v1/ supporting chat completions and model discovery. Drop-in compatible with OpenAI's Chat API — use any OpenAI SDK or HTTP client pointed at https://api.aionlabs.ai/v1. A signed-in browser workspace is available for testing prompts directly, alongside account pages for managing API keys, reviewing usage, and checking billing state.

API Endpoints

POST /v1/chat/completions    # Send requests to models
GET  /v1/models              # Discover available models

Authentication

Chat completion requests require an API key in the Authorization header:

Authorization: Bearer YOUR_API_KEY
Authorization: Api-Key YOUR_API_KEY

Create API keys from the dashboard. The GET /v1/models endpoint is publicly accessible without authentication.

Next Steps

Quickstart — make your first API request in JavaScript, Python, or curl
Models — see available models and capabilities
Pricing — per-token pricing by model
Rate Limits — request and token limits by tier