> ## Documentation Index
> Fetch the complete documentation index at: https://docs.yelinai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Enterprise Pricing

> Enterprise-grade AI API pricing. 200+ models, transparent pay-as-you-go pricing, invoice support for enterprises.

## Enterprise Technical Service Pricing

### Service Positioning

LaoZhang API provides **enterprise-grade AI technical API integration services** for enterprises and developers:

* **Service Nature**: Information technology service / API integration service
* **Target Customers**: Enterprise users, development teams, technical departments
* **Billing Method**: Token/per-call billing, pay-as-you-go, no monthly fees

## Transparent Pricing

Most model prices are transparent and public, consumption fully trackable

## Complete Models, Fast Updates

Whenever manufacturers release new models, LaoZhang API is always quick to update

## Enterprise Services

### Top-up Plans

* Standard
* Enterprise

Minimum top-up \$7. Large single top-ups receive up to 10% bonus credit.

**Enterprise Exclusive Service**:

* Volume discounts for large purchases
* Invoice support available
* Contract options
* Dedicated account manager
* Priority technical support

**Contact**:

* Email: [hi@yelinai.com](mailto:hi@yelinai.com)

### Cost Estimation Reference

## Common Scenario Cost Reference

\*\*API Call Scenario Costs:\*\***Daily Conversation** (GPT-4.1-mini)

* 1000 conversations ≈ \$1
* 30 times per day ≈ \$1 per month

**Long Text Processing** (GPT-4o)

* Process 100,000 words ≈ \$5
* Document processing ≈ \$0.5

**Code Development** (Claude-4)

* Generate 10,000 lines of code ≈ \$3
* Cursor daily use ≈ \$0.5

**Image Generation** (GPT-4o-image)

* Generate 100 images ≈ \$1
* Only \$0.01 per image

## Usage Monitoring & Management

### Console Features

* Usage Monitoring
* Key Management
* Cost Optimization

**Real-time Dashboard**

* Daily, weekly, monthly statistics
* Model usage distribution
* Detailed cost queries
* Quota warning settings

**View at**: [api.yelinai.com/log](https://api.yelinai.com/log)

**Fine-grained Permission Control**

* Multiple key management
* Model permission restrictions
* Quota limit settings
* Validity period control

**Manage at**: [api.yelinai.com/token](https://api.yelinai.com/token)

**Technical Optimization Recommendations**

1. Use `max_tokens` to limit output
2. Choose appropriate `temperature`
3. Cache frequently used responses
4. Batch process requests
5. Use streaming output to reduce timeouts

### Billing Modes

LaoZhang API supports two billing modes. When a model supports both modes simultaneously:

**Per-call billing takes priority over token-based billing**If a model supports both per-call and token-based billing, the system defaults to per-call billing.

#### API Key Settings Impact

## Token-based Only

If token is set to “token-based only”, even if the model supports per-call billing, it will use token-based billing

## Default Settings

Tokens support all billing modes by default, system auto-selects (per-call priority)

### Per-call Billing Scenarios

The following types of models typically use per-call billing:

* Image Generation
* Video Generation
* Special Models

**Applicable Models**:

* sora\_image series
* flux-kontext-pro
* DALL-E series

**Billing Unit**: Per image

**Applicable Models**:

* Video generation APIs
* Animation production models

**Billing Unit**: Per video/per second

**Identification Method**:

* Model names with `-all` suffix
* Specific functional models

**Billing Unit**: Per call

View complete model price list: [LaoZhang API Pricing](https://api.yelinai.com/account/pricing)

## Token Billing Explanation

### What are Tokens?

## Understanding Tokens Quickly

Tokens are AI’s “vocabulary units”, the basic unit for billing.**Simple Memory**:

* 1 Chinese character ≈ 2 tokens
* 1 English word ≈ 1 token
* 500 Chinese characters ≈ 1000 tokens

**Real Examples**:

* “Hello World” = 2 tokens
* A typical article (2000 words) ≈ 3000 tokens

### Consumption Examples

| Use Case              | Input Tokens | Output Tokens | Total | Cost (gpt-4.1-mini) |
| --------------------- | ------------ | ------------- | ----- | ------------------- |
| Simple Q\&A           | 20           | 50            | 70    | \$0.00004           |
| Article generation    | 100          | 2000          | 2100  | \$0.0013            |
| Code debugging        | 500          | 300           | 800   | \$0.00027           |
| Long text translation | 5000         | 5000          | 10000 | \$0.0035            |

### Prompts and Completions

In each API call, costs consist of two parts:

1

Prompt - Input Tokens

All content you send to the model, including:

* System prompts
* User questions
* Context information
* Chat history (if any)

2

Completion - Output Tokens

Content generated by the model, including:

* Text responses
* Code generation
* Structured data

Input and output prices may differ between models. Typically, output tokens cost more than input tokens.

## Model Price Reference

### Popular Models Pricing

* Best Value TOP5
* Coding Specific
* Image Generation

| Model                | Input Price | Output Price | Features          | Use Cases          |
| -------------------- | ----------- | ------------ | ----------------- | ------------------ |
| **gpt-4.1-mini**     | \$0.15/1M   | \$0.6/1M     | Ultra-fast        | Daily conversation |
| **deepseek-v3**      | \$0.27/1M   | \$1.1/1M     | Chinese model     | General tasks      |
| **gemini-2.5-flash** | \$0.15/1M   | \$0.6/1M     | Multimodal        | Image-text         |
| **claude-3-haiku**   | \$0.25/1M   | \$1.25/1M    | Reliable          | Text processing    |
| **qwen-max**         | \$0.5/1M    | \$2/1M       | Chinese optimized | Chinese tasks      |

**Recommendation**: gpt-4.1-mini, fast, effective, and low-cost

| Model                 | Input Price | Output Price | Coding Ability | Cursor Compatible |
| --------------------- | ----------- | ------------ | -------------- | ----------------- |
| **claude-sonnet-4**   | \$3/1M      | \$15/1M      | Excellent      | Perfect           |
| **deepseek-coder-v3** | \$0.27/1M   | \$1.1/1M     | Great          | Good              |
| **gpt-4.1**           | \$2.5/1M    | \$10/1M      | Great          | Perfect           |
| **qwen-coder**        | \$0.5/1M    | \$2/1M       | Good           | Good              |

**Cursor User First Choice**: gpt-4.1 (specially optimized)

| Model                | Price        | Size      | Speed | Quality   |
| -------------------- | ------------ | --------- | ----- | --------- |
| **gpt-4o-image**     | \$0.01/image | 1024x1024 | 3s    | Excellent |
| **flux-kontext-pro** | \$0.04/image | Multiple  | 5s    | Superior  |
| **dall-e-3**         | \$0.04/image | 1024x1024 | 10s   | Excellent |
| **sora-image**       | \$0.01/image | 1024x1024 | 2s    | Good      |

**Best Value**: gpt-4o-image, only a penny per image

### Cost Estimation Method

1

Small Sample Testing

Test with a small number of samples (5-10)

2

Check Consumption Logs

View detailed token consumption for each call in console

3

Calculate Average

Calculate average token count per call

4

Estimate Total Cost

Average tokens × Expected calls × Model unit price

## Practical Recommendations

1. Test with cheaper models first to verify feasibility
2. Analyze actual consumption through backend logs
3. Choose appropriate models based on task complexity
4. Optimize prompts to reduce unnecessary token consumption

## Real-time Price Query

## Model Price List

View real-time prices for all models

* Token-based billing prices
* Per-call billing prices
* Discount comparisons

## Cost Calculator (In Development)

Quickly estimate usage costs

* Enter estimated usage
* Select models to use
* Auto-calculate costs

## FAQ

How to check real-time prices?

Log in to [LaoZhang API Console](https://api.yelinai.com), you can view real-time prices for all models on the model list page.

How long for top-up to arrive?

Top-up arrives instantly, available immediately after successful payment.

Do you support invoices?

Yes, we support issuing official invoices. Please submit an invoice application in the console.

Are there bulk purchase discounts?

Enterprise large top-ups can enjoy more discounts. Please contact customer service for consultation.

## Enterprise Services & Invoicing

### Service Nature

* **Service Type**: Information technology service / Technical service
* **Invoice Category**: Information technology service fee or Data collection fee
* **Target Customers**: Enterprise users, development teams, technical departments

### Invoice Process

After customer online top-up or corporate transfer is successful, invoices are issued based on the actual payment amount (all prices include tax). Customers need to provide detailed invoice information: enterprise or university name, tax ID, etc.

1

Submit Invoice Information

Website backend top navigation - Invoice, self-service invoice form submission[Submit Invoice Application →](https://xinqikeji.feishu.cn/share/base/form/shrcnkZ6QwkdCpBUoNfDem2Mmwd)

2

Invoice Type

* VAT general invoices available (special invoice tax rate needs separate discussion)
* Invoice category: **Information Technology Service Fee** or **Data Collection Fee**
* Can cooperate to issue: Purchase list with company seal

3

Delivery Time

About 1 business day, electronic invoice sent via email

This service issues invoices under the nature of **technical services**, meeting enterprise financial and technical procurement requirements.

***

## Get Started

Register an account, experience 200+ AI model API integration services