Baidu: ERNIE 4.5 21B A3B API

Access Baidu: ERNIE 4.5 21B A3B from Baidu using Puter.js AI API.

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Model Card

ERNIE 4.5 21B A3B is a lightweight text-only language model from Baidu using a Mixture-of-Experts architecture with 21B total parameters but only 3B active per token. It excels at general language understanding, generation, reasoning, and coding tasks while remaining computationally efficient. Released under Apache 2.0, it achieves competitive performance against larger models like Qwen3-30B-A3B despite having 30% fewer total parameters.

Context Window N/A

tokens

Max Output 8K

tokens

Input Cost $0.07

per million tokens

Output Cost $0.28

per million tokens

Release Date Jun 30, 2025

 

API Usage Example

Add Baidu: ERNIE 4.5 21B A3B 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: "baidu/ernie-4.5-21b-a3b"
}).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: "baidu/ernie-4.5-21b-a3b"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

View full documentation →

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Frequently Asked Questions

What is this Baidu: ERNIE 4.5 21B A3B API about?

The Baidu: ERNIE 4.5 21B A3B API gives you access to Baidu's chat model through Puter.js. With just a few lines of JavaScript, you can integrate Baidu: ERNIE 4.5 21B A3B into any web app or Node.js project — no API keys, no backend, and no configuration required.

Who created Baidu: ERNIE 4.5 21B A3B?

Baidu: ERNIE 4.5 21B A3B was created by Baidu and released on Jun 30, 2025.

What is the max output length of Baidu: ERNIE 4.5 21B A3B?

Baidu: ERNIE 4.5 21B A3B can generate up to 8K tokens in a single response.

How much does it cost?
The Baidu: ERNIE 4.5 21B A3B API is available through the User-Pays Model. As a developer, you can add the Baidu: ERNIE 4.5 21B A3B API to your app for free — your users pay for their own AI costs directly.
Price per 1M tokens
Input$0.07
Output$0.28
How do I access the Baidu: ERNIE 4.5 21B A3B API?

You can access the Baidu: ERNIE 4.5 21B A3B 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 Baidu: ERNIE 4.5 21B A3B API work with React / Vue / Vanilla JS / Node / etc.?

Yes — the Baidu: ERNIE 4.5 21B A3B 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 Baidu: ERNIE 4.5 21B A3B to your app without worrying about API keys or setup.

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