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.
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.
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.
- Free API testing before you choose a paid LLM backend.
- Desktop chat through Yolo-Auto Desktop or another compatible client.
- Developer workflows that need an API key more than a closed chatbot UI.
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.
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);When to choose Yolo-Auto
You need OpenAI-compatible LLM access, predictable cost, free testing, and no prompt or response storage.
You need image generation, every model under the sun, a managed IDE, or a consumer-only chatbot with no API workflow.
Read the docs, check models, compare pricing, or review the privacy policy.
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.
Related LLM API guides
Free LLM API for developers. Yolo-Auto offers an OpenAI-compatible API key, chat completions endpoint, free tier, and no saved prompt history.
Free OpenAI-Compatible APIFree OpenAI-compatible API for developers. Test chat completions with common SDKs, a free API key, public models, and no saved prompt history.
Free GPT AlternativeFree GPT-style AI access through Yolo-Auto. OpenAI-compatible API, free tier, desktop chat option, and no saved prompt history.
ChatGPT Alternative for DevelopersChatGPT alternative for developers. Yolo-Auto provides GPT-style chat through an OpenAI-compatible API, desktop client support, and flat-rate pricing.
Free AI Tools for DevelopersFree AI tools for developers from Yolo-Auto: free API key, desktop chat option, OpenAI-compatible docs, and setup examples for agents.