Baidu API
Access Baidu instantly with Puter.js, and add AI to any app in a few lines of code without backend or API keys.
// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain AI like I'm five!", {
model: "baidu/ernie-4.5-300b-a47b"
}).then(response => {
console.log(response);
});
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
puter.ai.chat("Explain AI like I'm five!", {
model: "baidu/ernie-4.5-300b-a47b"
}).then(response => {
console.log(response);
});
</script>
</body>
</html>
List of Baidu Models
Baidu: ERNIE 4.5 21B A3B
baidu/ernie-4.5-21b-a3b
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.
ChatBaidu: ERNIE 4.5 21B A3B Thinking
baidu/ernie-4.5-21b-a3b-thinking
ERNIE 4.5 21B A3B Thinking is Baidu's reasoning-enhanced language model built on the 21B A3B architecture with explicit chain-of-thought capabilities. It activates only 3B of its 21B parameters per token while specializing in logic, mathematics, coding, and multi-step reasoning tasks. The model supports extended context up to 131K tokens and is optimized for complex problem-solving through structured thinking.
ChatBaidu: ERNIE 4.5 300B A47B
baidu/ernie-4.5-300b-a47b
ERNIE 4.5 300B A47B is Baidu's flagship text-only large language model featuring 300B total parameters with 47B active per token via MoE architecture. It demonstrates state-of-the-art performance on instruction following and knowledge benchmarks like IFEval, SimpleQA, and ChineseSimpleQA. The model supports 131K context length and excels at text understanding, generation, reasoning, and coding.
ChatBaidu: ERNIE 4.5 VL 28B A3B
baidu/ernie-4.5-vl-28b-a3b
ERNIE 4.5 VL 28B A3B is a lightweight multimodal vision-language model with 28B total parameters but only 3B active per token. It processes both images and text simultaneously, enabling tasks like image comprehension, chart analysis, document understanding, and cross-modal reasoning. The model offers both thinking and non-thinking modes while matching performance of larger models like Qwen2.5-VL-32B.
ChatBaidu: ERNIE 4.5 VL 424B A47B
baidu/ernie-4.5-vl-424b-a47b
ERNIE 4.5 VL 424B A47B is Baidu's largest multimodal vision-language model with 424B total parameters and 47B active per token. It supports up to 131K context tokens and excels at visual reasoning, document/chart understanding, and visual question answering with both thinking and non-thinking modes. In thinking mode, it approaches or surpasses OpenAI o1 on reasoning benchmarks like MathVista, MMMU, and VisualPuzzle.
Frequently Asked Questions
The Baidu API gives you access to models for AI chat. Through Puter.js, you can start using Baidu models instantly with zero setup or configuration.
Puter.js supports a variety of Baidu models, including Baidu: ERNIE 4.5 21B A3B, Baidu: ERNIE 4.5 21B A3B Thinking, Baidu: ERNIE 4.5 300B A47B, and more. Find all AI models supported by Puter.js in the AI model list.
With the User-Pays model, users cover their own AI costs through their Puter account. This means you can build apps without worrying about infrastructure expenses.
Puter.js is a JavaScript library that provides access to AI, storage, and other cloud services directly from a single API. It handles authentication, infrastructure, and scaling so you can focus on building your app.
Yes — the Baidu API through Puter.js works with any JavaScript framework, Node.js, or plain HTML. Just include the library and start building. See the documentation for more details.