OpenAI: GPT-6 Luna Pro
openai/gpt-6-luna-pro
Try GPT-6 Luna Pro for free in your browser, and add it to your app for free with Puter.js AI API.
Try it free Add to your app// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain quantum computing in simple terms", {
model: "openai/gpt-6-luna-pro"
}).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/gpt-6-luna-pro"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
Model Card
GPT-6 Luna Pro is OpenAI's higher-effort configuration of GPT-6 Luna, the fast, low-cost tier in the GPT-6 family released September 22, 2026. Rather than a separate model, it is the same underlying Luna checkpoint served with reasoning effort set to pro, trading speed for more careful reasoning on harder requests.
It carries the same $0.10 per million input token and $0.50 per million output token pricing as base Luna, along with the same 1,050,000-token context window and 128,000 max output tokens, and supports function calling, structured outputs, and adjustable reasoning effort.
Luna Pro fits teams already using Luna for high-volume, latency-sensitive work such as summarization and extraction who need better accuracy on a subset of harder requests without stepping up to Sol's pricing.
Context Window 1M
tokens
Max Output 128K
tokens
Input Cost $0.1
per million tokens
Output Cost $0.5
per million tokens
Input file, image, text
modalities
Tool Use Yes
Release Date Sep 22, 2026
Try GPT-6 Luna Pro for free
Try GPT-6 Luna Pro instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
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Frequently Asked Questions
You can access GPT-6 Luna Pro by OpenAI through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required. You can also use it with Python or cURL via Puter's OpenAI-compatible API.
GPT-6 Luna Pro is free to try with a Puter account. Every account includes a free AI allowance, and you can chat with it in the playground on this page. You can upgrade your account anytime for a larger allowance.
GPT-6 Luna Pro is free to integrate using the Puter.js AI API. With the User-Pays Model, you can add AI to your app for $0, since users cover their own AI usage through their Puter account.
| Price per 1M tokens | |
|---|---|
| Input | $0.1 |
| Output | $0.5 |
GPT-6 Luna Pro was created by OpenAI and released on Sep 22, 2026.
GPT-6 Luna Pro supports a context window of 1M tokens. For reference, that is roughly equivalent to 2,100 pages of text.
GPT-6 Luna Pro can generate up to 128K tokens in a single response.
GPT-6 Luna Pro accepts the following input types: file, image, text. It produces: text.
Yes, GPT-6 Luna Pro supports tool use (function calling), allowing it to interact with external tools, APIs, and data sources as part of its response flow.
Yes — the GPT-6 Luna Pro 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.
Add GPT-6 Luna Pro to your app for free
Developers can integrate GPT-6 Luna Pro for free using the Puter.js AI API.
With the User-Pays Model, each user covers their own AI usage instead of the developer.