ai& API Documentation

Overview

ai& serves open-weight LLMs from our own infrastructure through OpenAI- and Anthropic-compatible APIs. Point your existing SDK at our base URL — your code runs unchanged against the open-source models we host, with per-token credit billing.

Base URL

https://api.aiand.com

All API endpoints are served from this base URL. Authentication is required for all requests.

Your first call

curl

curl https://api.aiand.com/v1/chat/completions \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-oss-120b",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Python

from openai import OpenAI

client = OpenAI(base_url="https://api.aiand.com/v1", api_key="sk-...")

response = client.chat.completions.create(
    model="openai/gpt-oss-120b",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)

Node.js

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.aiand.com/v1",
  apiKey: "sk-...",
});

const response = await client.chat.completions.create({
  model: "openai/gpt-oss-120b",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

What you get

OpenAI Compatible

Drop-in replacement for /v1/chat/completions. Works with the OpenAI SDK, LangChain, LlamaIndex, and anything that speaks the OpenAI format.

Open Source Models

Access open source models through a single API key. Same OpenAI-compatible request format across all models.

Multimodal Inputs

Upload images and video once via the Files API, then reference by file_id in chat completions. OpenAI-canonical wire shape — vanilla SDK works.

Credit Billing

Pay-per-token with automatic credit deduction. Per-model pricing — you only pay for what you use. Failed requests are not billed.

Next steps

Quick Start From zero to your first call in five minutes.

Model Catalog Open-weight models with prices, capabilities, and context windows.

Chat Completions Endpoint reference — request and response shapes.

Migrating from OpenAI Two lines of config to point your existing OpenAI code at ai&.