LLM API is a professional AI interface service platform that provides unified API interfaces to call mainstream language models like GPT, Claude, and Llama. Enterprise-grade API service helping developers quickly integrate AI capabilities.

How to get started with LLM API?

After registration, you will receive API keys. Use our SDKs or call RESTful APIs directly to complete LLM API integration in 5 minutes. Supports Python, Node.js, PHP and other languages.

Which AI models does LLM API support?

Our LLM API supports GPT-4o, GPT-4, Claude 3 Opus/Sonnet/Haiku, Llama 3, Mistral and other mainstream language models through unified API interface.

How does LLM API charge?

LLM API uses flexible pay-as-you-go pricing with free credits for trial. Professional plan at $1 per credit supports 500K calls/month. Enterprise plan offers custom solutions for large-scale API needs.

What is the difference between API services?

LLM API (Large Language Model API) is a unified interface service for language models. We provide standardized API interfaces for all mainstream AI models including GPT, Claude, and Llama.

FAQ Answers

We've compiled the most frequently encountered questions to help you find answers quickly

Account and Authentication

How to get API key?

Steps to get API key:

Log in to your account and enter the console
Click "API Keys" in the left menu
Click "Create New Key" button
Set key name and permissions
Copy and securely save the generated key

Note: Keys are only shown once, please keep them safe. If lost, you need to generate new ones.

What to do if API key is leaked?

If your API key may have been leaked:

Immediately revoke the old key - Delete the leaked key in the console
Generate a new key - Create a new API key
Update applications - Update all places using the key to the new key
Check logs - Review API call logs for any unusual activity
Contact support - If anomalies are found, immediately contact technical support

What authentication methods are supported?

Currently supported authentication methods:

Bearer Token
Add to Request Headers: Authorization: Bearer YOUR_API_KEY
OAuth 2.0
Suitable for third-party application integration (Enterprise Edition)

Billing and Plans

How to calculate token usage?

Token calculation rules:

• Input Tokens: The message content you send
• Output Tokens: The response content generated by the model
• Total Tokens = Input Tokens + Output Tokens

Reference: 1 Token ≈ 0.75 English words ≈ 0.5 Chinese characters

Use Token Calculator →

What to do when free credits are used up?

When free credits are exhausted, you can:

Upgrade to a paid plan for more credits and features
Pay-as-you-go based on actual usage
Participate in activities to get additional credits
Invite friends to earn bonus credits

View Pricing Plans

How to check usage and bills?

View detailed usage in the console:

Log in to the console
Click "Usage" to view real-time usage statistics
Click "Bills" to view historical billing details
Export detailed reports in CSV format

Technical Issues

Which programming languages are supported?

We provide official SDK support for the following languages:

🐍Python

🟨JavaScript/TypeScript

☕Java

🐹Go

🔷C#/.NET

🐘PHP

Other languages can directly use REST API

What are the API rate limits?

Rate limits vary by plan:

Plan	RPM	TPM
Free Plan	20/minutes	40,000 tokens/minutes
Basic Plan	60/minutes	100,000 tokens/minutes
Professional Plan	200/minutes	500,000 tokens/minutes
Enterprise Plan	Custom	Custom

How to handle long text?

Suggestions for handling long text:

• Choose appropriate model: GPT-4 supports longer context (32K tokens)
• Text chunking: Split long text into multiple parts for processing
• Summary first: Generate summary first, then process detailed content
• Use vector database: Combine with RAG technology to handle ultra-long documents

View Context Management Guide →

How to提高响应质量?

提高响应质量的技巧: