OpenAI o4 Mini API

Access OpenAI o4 Mini from OpenAI using Puter.js AI API.

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Model Card

OpenAI o4 Mini is a fast, cost-efficient reasoning model optimized for coding and visual tasks. It achieves remarkable performance for its size with full tool access in ChatGPT, succeeded by GPT-5 Mini.

Context Window N/A

tokens

Max Output 100K

tokens

Input Cost $1.1

per million tokens

Output Cost $4.4

per million tokens

Input text, image

modalities

Tool Use Yes

 

Knowledge Cutoff May 2024

 

Release Date Apr 16, 2025

 

API Usage Example

Add OpenAI o4 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: "openai/o4-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: "openai/o4-mini"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

View full documentation →

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Frequently Asked Questions

What is this OpenAI o4 Mini API about?

The OpenAI o4 Mini API gives you access to OpenAI's chat model through Puter.js. With just a few lines of JavaScript, you can integrate OpenAI o4 Mini into any web app or Node.js project — no API keys, no backend, and no configuration required.

Who created OpenAI o4 Mini?

OpenAI o4 Mini was created by OpenAI and released on Apr 16, 2025.

What is the max output length of OpenAI o4 Mini?

OpenAI o4 Mini can generate up to 100K tokens in a single response.

What is the knowledge cutoff of OpenAI o4 Mini?

OpenAI o4 Mini has a knowledge cutoff date of May 2024. This means the model was trained on data available up to that date.

What types of input can OpenAI o4 Mini process?

OpenAI o4 Mini accepts the following input types: text, image. It produces: text.

Does OpenAI o4 Mini support tool use (function calling)?

Yes, OpenAI o4 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 OpenAI o4 Mini API is available through the User-Pays Model. As a developer, you can add the OpenAI o4 Mini API to your app for free — your users pay for their own AI costs directly.
Price per 1M tokens
Input$1.1
Output$4.4
How do I access the OpenAI o4 Mini API?

You can access the OpenAI o4 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 OpenAI o4 Mini API work with React / Vue / Vanilla JS / Node / etc.?

Yes — the OpenAI o4 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 OpenAI o4 Mini to your app without worrying about API keys or setup.

Read the Docs View Tutorials