Free chatbot API

Free AI chatbot API for apps and agents.

Create a free Yolo-Auto API key and add programmable AI chat to an app, script, agent, or OpenAI-compatible chat client.

Get a free chatbot API key → View chat API docs

Free API key

Start building without a card or per-token bill.

Programmable chat

Send message arrays through the OpenAI-compatible chat completions route.

Private by default

Prompts and responses are not routinely retained as conversation history or used for training.

Quick setup

Create an account, copy your yolo_... API key, set your base URL to https://yolo-auto.com/v1, and use a public model from the models page.

Best next pages

Docs · Pricing · Models · Free AI chat · Cheap LLM API

Build a chatbot with a free API

Create an account, copy your Yolo-Auto API key, and call /v1/chat/completions from JavaScript, Python, curl, or a compatible SDK. The response uses the familiar chat-completions shape.

From conversational AI prototype to production

The free tier is for testing prompts, message history, and client behavior. Flat-rate paid plans are available when your chatbot or agent needs heavier usage without per-token billing.

Use a client or build your own interface

Connect the key to Yolo-Auto Desktop for immediate chat, use another client that accepts a custom OpenAI base URL, or build the conversation UI your product needs.

Use cases

Who Free AI Chatbot API is actually for

Free AI Chatbot API is best for developers and power users who want model access inside tools, agents, scripts, and apps, not just a closed consumer chatbot tab.

Positioning

The useful version of free AI is programmable

Generic free AI websites are fine for one-off prompts. Yolo-Auto is more useful when you want a key, an endpoint, model IDs, examples, and a path from testing to heavier usage.

That makes these pages more than a list of buzzwords: they point to the same developer workflow behind the product.

Implementation

Try Free AI Chatbot API with a normal chat completion

The fastest test is a single request against the OpenAI-compatible endpoint. Use your real Yolo-Auto API key, then swap the model ID if the models page shows a newer default.

curl

curl https://yolo-auto.com/v1/chat/completions \
  -H "Authorization: Bearer yolo_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen3.8-27b",
    "messages": [
      { "role": "user", "content": "Give me a practical getting-started checklist for using Yolo-Auto." }
    ]
  }'

OpenAI SDK style

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.YOLO_AUTO_API_KEY,
  baseURL: "https://yolo-auto.com/v1"
});

const response = await client.chat.completions.create({
  model: "qwen3.8-27b",
  messages: [{ role: "user", content: "Give me a practical getting-started checklist for using Yolo-Auto." }]
});

console.log(response.choices[0]?.message?.content);
Decision checklist

When to choose Yolo-Auto

Choose it when

You need OpenAI-compatible LLM access, predictable cost, free testing, and no prompt or response storage.

Skip it when

You need image generation, every model under the sun, a managed IDE, or a consumer-only chatbot with no API workflow.

Next step

Read the docs, check models, compare pricing, or review the privacy policy.

FAQ

Free AI Chatbot API FAQ

Is this free AI chat?

Yes. The free tier gives you API access you can use for chat in Yolo-Auto Desktop or another compatible client.

Is Yolo-Auto ChatGPT?

No. Yolo-Auto is not affiliated with OpenAI or ChatGPT. It is an OpenAI-compatible API for open-source model access.

Do you store my chat history?

No. Yolo-Auto does not store prompts, responses, or conversation history.

Explore more

Related LLM API guides