Login
Back to Blog
EnglishGuide

Ernie Bot API Guide 2026: Baidu AI API for Developers

Complete guide to Baidu's Ernie Bot API — model comparison, setup, code examples in Python and Node.js, pricing, and how it compares to Western AI models.

C
Crazyrouter Team
April 8, 2026 / 653 views
Share:
Ernie Bot API Guide 2026: Baidu AI API for Developers

Ernie Bot API Guide 2026: Baidu AI API for Developers#

Baidu's Ernie (文心大模型) is one of China's leading large language models, powering millions of users through the Ernie Bot (文心一言) product. For developers targeting Chinese markets or building bilingual applications, Ernie 4.0's API offers capabilities worth understanding.

What Is Ernie Bot?#

Ernie (Enhanced Representation through kNowledge IntEgration) is Baidu's flagship AI model series. Key facts:

  • Developer: Baidu (百度)
  • Product name: Ernie Bot (文心一言) — the consumer chatbot
  • API name: ERNIE via Baidu AI Cloud (文心千帆)
  • Launch: Ernie 1.0 (2019, NLP), Ernie Bot (2023), Ernie 4.0 (2024)
  • Strengths: Chinese language tasks, search integration, Baidu ecosystem

Ernie is deeply integrated with Baidu's search index and knowledge graph, giving it strong factual grounding for Chinese-language queries.

Ernie Model Lineup 2026#

ModelBest ForContextNotes
ERNIE-4.0-TurboGeneral tasks, Chinese NLP128KFlagship model
ERNIE-4.0High-quality generation128KBest quality
ERNIE-SpeedHigh-volume, fast tasks8KCost-optimized
ERNIE-LiteEdge/lightweight apps8KSmallest size
ERNIE-TinyEmbedded/IoT4KUltra-lightweight
ERNIE 3.5Legacy apps8KOlder generation

Ernie Bot API vs Western Models#

Capability Comparison#

CapabilityErnie 4.0GPT-5.2Claude Opus 4.6Gemini 3 Pro
Chinese understanding⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
Chinese generation⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
English understanding⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
Code generation⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
Baidu search grounding⭐⭐⭐⭐⭐⭐⭐
CN regulatory compliance✅ Full⚠️ Limited⚠️ Limited⚠️ Limited
Accessibility from China✅ Native⚠️ Requires VPN⚠️ Requires VPN⚠️ Requires VPN

When to Use Ernie vs Other Models#

Choose Ernie Bot API when:

  • Building apps targeting mainland China users
  • Need Baidu search grounding for factual accuracy in Chinese
  • Require ICP/compliance for Chinese market deployment
  • Working with Baidu's ecosystem (Maps, Baike, etc.)

Choose Qwen/DeepSeek/GLM instead when:

  • Better technical benchmarks are needed for Chinese tasks
  • You need OpenAI-compatible API format
  • Operating internationally with Chinese language support

Choose Claude/GPT-5 when:

  • English-first applications
  • Complex reasoning and coding tasks
  • Global deployment without China-specific requirements

Getting Started with Ernie Bot API#

Option 1: Baidu AI Cloud (Native)#

  1. Register at Baidu AI Cloud
  2. Enable the ERNIE API service under "千帆大模型平台"
  3. Create an application to get API Key and Secret Key
  4. Authentication uses OAuth 2.0 (get access token first)
python
import requests

def get_ernie_access_token(api_key: str, secret_key: str) -> str:
    """Get OAuth access token for Ernie Bot API."""
    url = f"https://aip.baidubce.com/oauth/2.0/token"
    params = {
        "grant_type": "client_credentials",
        "client_id": api_key,
        "client_secret": secret_key
    }
    response = requests.post(url, params=params)
    return response.json()["access_token"]

def chat_with_ernie(
    message: str,
    api_key: str,
    secret_key: str,
    model: str = "ernie-4.0-turbo-8k"
) -> str:
    """Send a message to Ernie Bot."""
    
    access_token = get_ernie_access_token(api_key, secret_key)
    
    url = f"https://aip.baidubce.com/rpc/2.0/ai_custom/v1/wenxinworkshop/chat/{model}"
    
    headers = {"Content-Type": "application/json"}
    params = {"access_token": access_token}
    
    payload = {
        "messages": [
            {"role": "user", "content": message}
        ]
    }
    
    response = requests.post(url, headers=headers, params=params, json=payload)
    data = response.json()
    
    return data["result"]

# Usage
answer = chat_with_ernie(
    "请解释一下人工智能在医疗诊断中的应用",
    api_key="your-api-key",
    secret_key="your-secret-key"
)
print(answer)

Multi-turn Conversation#

python
def multi_turn_chat(
    conversation_history: list,
    new_message: str,
    api_key: str,
    secret_key: str
) -> tuple[str, list]:
    """Multi-turn conversation with Ernie."""
    
    access_token = get_ernie_access_token(api_key, secret_key)
    
    # Add new user message
    conversation_history.append({
        "role": "user",
        "content": new_message
    })
    
    url = "https://aip.baidubce.com/rpc/2.0/ai_custom/v1/wenxinworkshop/chat/ernie-4.0-turbo-8k"
    
    payload = {
        "messages": conversation_history,
        "system": "你是一个专业的AI助手,回答要准确、简洁。"
    }
    
    response = requests.post(
        url,
        params={"access_token": access_token},
        json=payload
    )
    
    reply = response.json()["result"]
    
    # Add assistant reply to history
    conversation_history.append({
        "role": "assistant",
        "content": reply
    })
    
    return reply, conversation_history

# Usage
history = []
reply, history = multi_turn_chat(history, "什么是Transformer架构?", api_key, secret_key)
print(f"Ernie: {reply}")

reply, history = multi_turn_chat(history, "它的主要优势是什么?", api_key, secret_key)
print(f"Ernie: {reply}")

Option 2: OpenAI-Compatible API via Crazyrouter#

For developers preferring the OpenAI SDK format (and to access Ernie alongside other models):

python
from openai import OpenAI

client = OpenAI(
    api_key="your-crazyrouter-key",
    base_url="https://crazyrouter.com/v1"
)

# Access Ernie via OpenAI-compatible format
response = client.chat.completions.create(
    model="ernie-4.0-turbo",
    messages=[
        {
            "role": "system",
            "content": "你是一个专业的助手,请用准确的中文回答问题。"
        },
        {
            "role": "user",
            "content": "解释一下大数据在零售行业的应用案例"
        }
    ],
    max_tokens=1024
)

print(response.choices[0].message.content)

Node.js Example#

javascript
import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: process.env.CRAZYROUTER_API_KEY,
  baseURL: 'https://crazyrouter.com/v1',
});

async function ernieChatbot(userMessage, systemPrompt = '你是一个专业助手') {
  const response = await client.chat.completions.create({
    model: 'ernie-4.0-turbo',
    messages: [
      { role: 'system', content: systemPrompt },
      { role: 'user', content: userMessage }
    ],
    max_tokens: 2048,
    temperature: 0.7,
  });
  
  return response.choices[0].message.content;
}

// Usage
const answer = await ernieChatbot('帮我写一段商品介绍文案,产品是智能手表');
console.log(answer);

Pricing Comparison#

Ernie vs Competing Chinese Models#

ModelProviderInput (¥/1M)Output (¥/1M)Input ($)Output ($)
ERNIE-4.0-TurboBaidu¥20¥60~$2.75~$8.25
ERNIE-SpeedBaidu¥1¥1~$0.14~$0.14
Qwen2.5-72BAlibaba¥4¥12~$0.55~$1.65
DeepSeek V3.2DeepSeek¥2¥8~$0.27~$1.10
GLM-4.6Zhipu¥5¥15~$0.69~$2.07

Key takeaway: ERNIE-Speed is very cost-competitive for high-volume Chinese text tasks. ERNIE-4.0-Turbo is priced at a premium compared to Qwen and DeepSeek alternatives with similar Chinese capabilities.

Ernie Bot Practical Use Cases#

1. Chinese Customer Service Bot#

python
CUSTOMER_SERVICE_PROMPT = """你是XX公司的客服助手。
- 用礼貌、专业的中文回答
- 遇到无法解决的问题,引导用户联系人工客服
- 不要编造信息,如果不确定,请说"让我帮您查询一下"
- 回答要简洁,不超过200字"""

def handle_customer_query(query: str) -> str:
    return chat_with_ernie_sdk(query, system_prompt=CUSTOMER_SERVICE_PROMPT)

2. Chinese Document Summarization#

python
def summarize_chinese_doc(document: str, summary_length: str = "medium") -> str:
    length_map = {
        "short": "请用3句话总结",
        "medium": "请用100-200字总结",
        "long": "请用要点形式详细总结,分为主要观点和关键细节"
    }
    
    prompt = f"{length_map[summary_length]}以下文档的核心内容:\n\n{document}"
    
    response = client.chat.completions.create(
        model="ernie-4.0-turbo",
        messages=[{"role": "user", "content": prompt}],
        temperature=0.3
    )
    
    return response.choices[0].message.content

Frequently Asked Questions#

Q: Is Ernie Bot better than ChatGPT for Chinese? A: For pure Chinese language tasks, Ernie, Qwen, DeepSeek, and GLM all outperform ChatGPT. Among Chinese models, Qwen2.5 and DeepSeek V3.2 currently lead on technical benchmarks; Ernie leads on Baidu ecosystem integration.

Q: Can I use Ernie Bot API outside China? A: Yes, Baidu AI Cloud API is accessible internationally, though some features (like Baidu search grounding) may have limitations outside China.

Q: Does Ernie support function calling? A: Yes, newer Ernie versions support function calling. The format differs slightly from OpenAI's standard, which is one reason some developers prefer accessing through OpenAI-compatible gateways.

Q: What's the difference between Ernie Bot and Wenxin? A: They're the same thing — "文心一言" (Wenxin Yiyan) is the Chinese name for Ernie Bot, and ERNIE (文心大模型) is the underlying model. Baidu uses "ERNIE" as the technical model name.

Q: How does Ernie 4.0 compare to Qwen2.5 for Chinese tasks? A: Both are strong for Chinese. Qwen2.5-72B is generally preferred for technical tasks and coding due to better benchmarks. Ernie 4.0 has an edge for Baidu-integrated knowledge and general Chinese conversational quality.

Summary#

Ernie Bot API is a solid choice for:

  • China-first applications requiring local compliance
  • Baidu ecosystem integration (search, maps, Baike)
  • High-volume Chinese text tasks at low cost (ERNIE-Speed)

For pure technical performance on Chinese tasks, Qwen2.5 or DeepSeek V3.2 often lead. For global applications with Chinese support, accessing all models through Crazyrouter lets you route to the best model for each task without managing multiple API integrations.

Access Ernie, Qwen, DeepSeek, and 300+ models via Crazyrouter

Implementation Guides

Related Posts

PixVerse AI API Pricing & Integration Guide: Video Generation for Marketing Teams 2026Guide

PixVerse AI API Pricing & Integration Guide: Video Generation for Marketing Teams 2026

"Complete PixVerse AI pricing breakdown, API integration guide, and comparison with competitors. Learn how to build cost-effective marketing video pipelines with PixVerse and multi-model fallback."

Apr 13
Claude Card Declined? How to Fix API Payment Methods and Billing Issues in 2026Guide

Claude Card Declined? How to Fix API Payment Methods and Billing Issues in 2026

Claude card declined? Learn how Claude API payment methods work, why billing fails, how to check supported billing locations, and what alternatives developers can use when direct Anthropic billing is unavailable.

Jun 20
Gemini Free Plan Guide 2026: Limits, Pricing, and When to UpgradeGuide

Gemini Free Plan Guide 2026: Limits, Pricing, and When to Upgrade

Complete developer guide to the Gemini free plan in 2026, including limits, pricing, model access, and when to upgrade to Gemini Advanced or API access.

Mar 17
SOTA AI Review 2026: Is It Worth Using for Video Generation?Guide

SOTA AI Review 2026: Is It Worth Using for Video Generation?

An honest review of SOTA AI for video generation. Covers features, quality comparison, pricing, and whether it's worth choosing over Sora, Veo 3, and Kling.

Feb 23
Claude Code Pricing Guide June 2026: Seat Costs, API Fallbacks, and Team BudgetsGuide

Claude Code Pricing Guide June 2026: Seat Costs, API Fallbacks, and Team Budgets

A developer-focused claude code pricing guide guide with setup steps, code examples, pricing tradeoffs, alternatives, and production tips.

Jun 14
Google Veo3 API Guide 2026: Build Production Video Pipelines with FallbacksGuide

Google Veo3 API Guide 2026: Build Production Video Pipelines with Fallbacks

A developer-focused June 2026 guide to Google Veo3 API, alternatives, implementation patterns, pricing tradeoffs, and when to use Crazyrouter for unified AI API access.

Jun 4