Grok 3 Mini API

Access Grok 3 Mini from xAI using Puter.js AI API.

Get Started

Model Card

Grok 3 Mini is a lightweight, cost-efficient reasoning model that thinks before responding, ideal for logic-based tasks that don't require deep domain knowledge. It features configurable reasoning effort and exposes accessible thinking traces for transparency.

Context Window 131K

tokens

Max Output 131K

tokens

Input Cost $0.3

per million tokens

Output Cost $0.5

per million tokens

Input text

modalities

Tool Use Yes

 

Knowledge Cutoff Nov 2024

 

Release Date Feb 17, 2025

 

API Usage Example

Add Grok 3 Mini to your app with just a few lines of code.
No API keys, no backend, no configuration required.

// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';

puter.ai.chat("Explain quantum computing in simple terms", {
    model: "x-ai/grok-3-mini"
}).then(response => {
    document.body.innerHTML = response.message.content;
});

<html>
<body>
    <script src="https://js.puter.com/v2/"></script>
    <script>
        puter.ai.chat("Explain quantum computing in simple terms", {
            model: "x-ai/grok-3-mini"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

View full documentation →

More Models from xAI

Chat

xAI: Grok 4.1 Fast

Grok 4.1 Fast is xAI's best tool-calling model released November 2025, featuring a 2M context window...

 Chat

xAI: Grok 4.1 Fast Non-Reasoning

Grok 4.1 Fast Non-Reasoning is the low-latency, non-reasoning variant of Grok 4.1 Fast that skips ex...

 Chat

xAI: Grok 4 Fast

Grok 4 Fast is an optimized variant delivering performance similar to Grok 4 but using 40% fewer thi...

View all xAI models →

Frequently Asked Questions

What is this Grok 3 Mini API about?

The Grok 3 Mini API gives you access to xAI's chat model through Puter.js. With just a few lines of JavaScript, you can integrate Grok 3 Mini into any web app or Node.js project — no API keys, no backend, and no configuration required.

Who created Grok 3 Mini?

Grok 3 Mini was created by xAI and released on Feb 17, 2025.

What is the context window of Grok 3 Mini?

Grok 3 Mini supports a context window of 131K tokens. For reference, that is roughly equivalent to 262 pages of text.

What is the max output length of Grok 3 Mini?

Grok 3 Mini can generate up to 131K tokens in a single response.

What is the knowledge cutoff of Grok 3 Mini?

Grok 3 Mini has a knowledge cutoff date of Nov 2024. This means the model was trained on data available up to that date.

What types of input can Grok 3 Mini process?

Grok 3 Mini accepts the following input types: text. It produces: text.

Does Grok 3 Mini support tool use (function calling)?

Yes, Grok 3 Mini supports tool use (function calling), allowing it to interact with external tools, APIs, and data sources as part of its response flow.

How much does it cost?
The Grok 3 Mini API is available through the User-Pays Model. As a developer, you can add the Grok 3 Mini API to your app for free — your users pay for their own AI costs directly.
Price per 1M tokens
Input$0.3
Output$0.5
How do I access the Grok 3 Mini API?

You can access the Grok 3 Mini API with just a few lines of JavaScript — no API keys, no backend, and no configuration required. Include the Puter.js library in your project and start making calls right away. For more details, check out our documentation.

Does the Grok 3 Mini API work with React / Vue / Vanilla JS / Node / etc.?

Yes — the Grok 3 Mini API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.

Get started with Puter.js

Add Grok 3 Mini to your app without worrying about API keys or setup.

Read the Docs View Tutorials