API in One API Documentation

API in One keeps provider credentials behind server-side routes, exposes clear model costs, and returns task IDs for long-running generation jobs. Account, credits, billing, and order pages continue through the shared dashboard.

Quick Start

curl --request POST \
  --url https://apiin.one/api/v1/chat/completions \
  --header "Authorization: Bearer aio_your_api_key" \
  --header "Content-Type: application/json" \
  --data '{
    "model": "gemini",
    "messages": [
      {
        "role": "user",
        "content": "Compare image and video model routes for a product launch."
      }
    ],
    "stream": false
  }'

API Endpoints

API in One exposes category-level endpoints backed by existing BFF routes. Chat requests are synchronous and OpenAI-compatible; image, video, music, speech, and tool jobs use async task polling where generation can take longer.

Request Schema

Most endpoints accept a shared authorization header and a JSON body with a model slug. Media routes add async workflow fields such as callback_url and task status polling.

Response Format

{
  "id": "chatcmpl_...",
  "object": "chat.completion",
  "choices": [
    {
      "message": {
        "role": "assistant",
        "content": "API in One routes the request through the selected model."
      }
    }
  ]
}

{
  "code": 200,
  "message": "success",
  "data": {
    "task_id": "task_abc123",
    "status": "IN_PROGRESS"
  }
}

Platform Benefits

SDKs & Code Examples

Use OpenAI-compatible SDKs for chat completion calls. For async image, video, music, speech, and tool jobs, submit the request first, then poll the task status endpoint until the output is ready.

from openai import OpenAI

client = OpenAI(
    api_key="aio_your_api_key",
    base_url="https://apiin.one/api/v1",
)

response = client.chat.completions.create(
    model="gemini",
    messages=[{"role": "user", "content": "Explain unified AI APIs"}],
)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: "aio_your_api_key",
  baseURL: "https://apiin.one/api/v1",
});

const response = await client.chat.completions.create({
  model: "gemini",
  messages: [{ role: "user", content: "Explain unified AI APIs" }],
});

OpenAIClient client = OpenAIClient.builder()
  .apiKey("aio_your_api_key")
  .baseUrl("https://apiin.one/api/v1")
  .build();

Migration from OpenAI

For chat integrations, switch configuration first. Image, video, music, speech, and tool routes use their own REST payloads and async task flow.

1. 1

   Get your API key

   Sign up for API in One and create a key from the dashboard.

2. 2

   Update base URL

   Change your base URL to https://apiin.one/api/v1 while keeping familiar authorization headers.

3. 3

   Test your endpoints

   Run a chat request with the new model slug, then test media and tool routes with their documented REST payloads and task states.

Supported Models via API in One Routes

Access 28 listed models through one gateway. Each model detail page includes parameters, pricing notes, request examples, and task status behavior.

FAQ