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

# APIYI - Enterprise AI Model API Hub

> Professional and stable AI API aggregation service, operating for 2+ years, 150K monthly visitors, long-term reliable service

<Info>
  **中文用户？** [切换到中文版](/)
</Info>

# Welcome to APIYI

**APIYI** is an enterprise-grade, professional and stable AI model API hub based on the unified OpenAI API standard, supporting 400+ popular AI models. With one token, you can easily access OpenAI, Claude, Gemini, DeepSeek, Qwen, Kimi, GLM, Minimax and all mainstream large language models.

## 🏢 Company Background

* Operating Entity: APIYI, LLC (United States)
* Official Partners: Google AI Studio, Microsoft Azure, Amazon AWS (legitimate quota sources, use with confidence)
* Service Guarantee:
  * Stable: Provides high concurrency and stable services for mainstream models like OpenAI, Claude, Google Gemini
  * Trusted:
    * Many well-known applications have stably integrated in production environments (see Use Cases section).
    * Cooperation with renowned universities, hospitals and other institutions, serving well-known enterprises.
    * Domestic entities can make corporate payments, issue invoices, and assist with procurement lists for worry-free reimbursement.

## 🛡️ Tired of Sketchy API Resellers?

<Info>
  The API reseller market is a mixed bag — silently swapped models, degraded quality, and vanishing operators are all too common. APIYI doesn't rely on verbal promises; we give you verifiable evidence.
</Info>

<CardGroup cols={3}>
  <Card title="2+ Years in Operation" icon="calendar-check" href="/en/faq/enterprise-trust">
    150K monthly visitors, long-term stable operation — not a fly-by-night newcomer
  </Card>

  <Card title="30-Day No-Questions Refund" icon="rotate-ccw" href="/en/faq/refund-policy">
    Unused balance refunded to the original payment method within 30 days, no fees via WeChat/Alipay
  </Card>

  <Card title="Pure Official Relay · Model Fidelity" icon="shield-check" href="/en/faq/model-version-identity">
    No rerouting, no degradation, no model swapping — verify fidelity yourself
  </Card>

  <Card title="Pragmatic SLA Guarantee" icon="file-check" href="/en/faq/sla-guarantee">
    Compensation for billing anomalies, credit reissue for outages, contractual SLA for enterprises
  </Card>

  <Card title="Data Security" icon="lock" href="/en/faq/data-security">
    Transparent proxy, no conversation content retained, minimal logging
  </Card>

  <Card title="Corporate Payment · Easy Reimbursement" icon="receipt" href="/en/faq/university-reimbursement">
    Invoices and corporate transfers supported — reimbursement-friendly for universities, hospitals and enterprises
  </Card>
</CardGroup>

## 🌟 Featured Models

<CardGroup cols={3}>
  <Card title="Nano Banana Pro/2 Series" icon="image" href="/en/api-capabilities/nano-banana-pricing">
    **🎨 Image Generation**

    The best available, 4K for just

    **\$0.09** /image

    🎯 As low as 30.3% of official price
  </Card>

  <Card title="Claude Official Relay" icon="sparkles" href="/en/api-capabilities/claude">
    **🤖 Chat & Coding**

    Pure official relay via AWS + Official dual channels, high cache hit rate

    ⚡ \~80% of official price
  </Card>

  <Card title="GPT-image-2 Full Series" icon="images" href="/en/api-capabilities/gpt-image-2/vs-gpt-image-2-all">
    **🖼️ Image Generation**

    Official relay + reverse (-all/-vip) full coverage

    🎯 Pick what fits your needs
  </Card>

  <Card title="Gemini Full Multimodal Series" icon="gem" href="/en/api-capabilities/model-info">
    **🔥 Multimodal**

    Full lineup for text, image, and video

    🏆 Gemini 3.1 Pro leads in performance
  </Card>

  <Card title="OpenAI Full Multimodal Series" icon="bot" href="/en/api-capabilities/model-info">
    **🚀 Multimodal**

    GPT / o series, image, video, and audio

    ✅ Full lineup, stable support
  </Card>
</CardGroup>

## 📖 Product Basics

<CardGroup cols={2}>
  <Card title="Quick Start" icon="rocket" href="/en/getting-started">
    Complete integration in three steps, start using AI models immediately
  </Card>

  <Card title="API Manual" icon="book" href="/en/api-manual">
    Complete API documentation and developer guide
  </Card>

  <Card title="Changelog" icon="megaphone" href="/en/changelog">
    🔥 Latest model launches, price adjustments and important updates
  </Card>

  <Card title="Pricing" icon="tag" href="/en/pricing">
    View detailed pricing and promotions for all models
  </Card>
</CardGroup>

## 🔧 Core APIs

<CardGroup cols={2}>
  <Card title="Chat Completions API" icon="message-circle" href="/en/api-manual">
    Chat Completions - Create multi-turn conversations and text generation
  </Card>

  <Card title="Models API" icon="list" href="/en/api-capabilities/model-info">
    Models API - Get all available model information
  </Card>

  <Card title="Image Generation API" icon="image" href="/en/api-capabilities/image-video-models">
    Images API - flux-kontext-pro, GPT-4o image generation
  </Card>

  <Card title="Embeddings API" icon="vector-square" href="/en/api-manual#embeddings-api">
    Embeddings API - Text vectorization and semantic search
  </Card>
</CardGroup>

## ⚡ API Capabilities

### 🎬 Video Generation API

<CardGroup cols={2}>
  <Card title="Seedance 2.0 Video Generation" icon="film" href="/en/api-capabilities/seedance2/overview">
    🔥 ByteDance's latest flagship: standard / fast / mini tiers, synchronized audio by default, high concurrency with no queuing
  </Card>

  <Card title="Wan2.7 Video Generation" icon="videotape" href="/en/api-capabilities/wan/overview">
    Alibaba official channel: text / image / reference-to-video plus video editing, from \$0.42/video
  </Card>

  <Card title="VEO 3.1 Video Generation" icon="clapperboard" href="/en/api-capabilities/veo-3-1-official/overview">
    Google official channel, per-generation billing from \$0.3/video, 720p / 1080p / 4K
  </Card>

  <Card title="Sora 2 Video Generation" icon="sparkles" href="/en/api-capabilities/sora-2/overview">
    OpenAI official channel, Sora 2 / Sora 2 Pro, text + image-to-video, from \$0.40/video
  </Card>

  <Card title="Character-Consistent Video" icon="images" href="/en/api-capabilities/seedance2/asset-library">
    Seedance asset library: upload images once, reference them for character-consistent videos
  </Card>

  <Card title="Video Understanding API" icon="eye" href="/en/api-capabilities/video-understanding">
    Intelligent video analysis, scene recognition, content understanding
  </Card>
</CardGroup>

### 🎨 Image Generation API

<CardGroup cols={2}>
  <Card title="Nano Banana Pro" icon="banana" href="/en/api-capabilities/nano-banana-image">
    🔥 4K HD, best-in-class text rendering, \$0.09/image
  </Card>

  <Card title="Nano Banana 2" icon="wand-sparkles" href="/en/api-capabilities/nano-banana-2-image">
    Advanced local editing, angle/focus/color/lighting adjustments
  </Card>

  <Card title="Flux Image Generation" icon="sparkles" href="/en/api-capabilities/flux-image-generation">
    Professional-grade image generation, multiple aspect ratios, 88% of official price
  </Card>

  <Card title="SeeDream 5.0" icon="sparkles" href="/en/api-capabilities/seedream-image">
    BytePlus official partnership, 4K HD, 65% of official price
  </Card>

  <Card title="Sora Image Generation" icon="wand-sparkles" href="/en/api-capabilities/sora-image-generation">
    Reverse-engineered image generation, \$0.01/image ultra-low price
  </Card>

  <Card title="GPT-Image-1" icon="palette" href="/en/api-capabilities/gpt-image-1">
    OpenAI official direct relay, stable and reliable
  </Card>
</CardGroup>

### 🔧 Basic APIs

<CardGroup cols={2}>
  <Card title="Model Info" icon="database" href="/en/api-capabilities/model-info">
    View detailed information for 300+ supported AI models
  </Card>

  <Card title="OpenAI SDK Integration" icon="code" href="/en/api-capabilities/openai/compatible">
    Seamlessly integrate APIYI using the official SDK
  </Card>

  <Card title="Image Understanding API" icon="eye" href="/en/api-capabilities/vision-understanding">
    Intelligent image analysis, OCR, object recognition, scene description
  </Card>

  <Card title="Claude Native Format" icon="messages-square" href="/en/api-capabilities/claude">
    Anthropic native API format, full feature support
  </Card>

  <Card title="Gemini Native Format" icon="gem" href="/en/api-capabilities/gemini/native">
    Google native API format, full feature support
  </Card>

  <Card title="Text Embedding API" icon="vector-square" href="/en/api-capabilities/text-embedding">
    Text vectorization and semantic search
  </Card>
</CardGroup>

## 🎯 Use Cases

### 💬 Conversational AI

<CardGroup cols={2}>
  <Card title="Cherry Studio" icon="cherry" href="/en/scenarios/chat/cherry-studio">
    Powerful AI chat client with multi-model switching
  </Card>

  <Card title="Chatbox" icon="message-square" href="/en/scenarios/chat/chatbox">
    Cross-platform desktop AI chat application
  </Card>

  <Card title="Open WebUI" icon="globe" href="/en/scenarios/chat/open-webui">
    Self-hosted web chat interface
  </Card>

  <Card title="ChatGPT Next Web" icon="app-window" href="/en/scenarios/chat/chatgpt-next-web">
    One-click deployable web-based ChatGPT
  </Card>
</CardGroup>

### 💻 Programming & Development

<CardGroup cols={2}>
  <Card title="Claude Code" icon="terminal" href="/en/scenarios/programming/claude-code">
    🔥 Anthropic's official AI programming assistant
  </Card>

  <Card title="Cursor" icon="mouse-pointer-click" href="/en/scenarios/programming/cursor">
    AI-powered code editor
  </Card>

  <Card title="Cline (VS Code)" icon="code" href="/en/scenarios/programming/cline">
    AI programming assistant in VS Code
  </Card>

  <Card title="Roo Code" icon="rocket" href="/en/scenarios/programming/roo-code">
    Efficient AI code generation tool
  </Card>

  <Card title="Codex CLI" icon="square-terminal" href="/en/scenarios/programming/codex-cli">
    Command-line AI programming assistant
  </Card>

  <Card title="Gemini CLI" icon="gem" href="/en/scenarios/programming/gemini-cli">
    Google Gemini command-line tool
  </Card>
</CardGroup>

### 🔧 Engineering

<CardGroup cols={2}>
  <Card title="LangChain" icon="link" href="/en/scenarios/engineering/langchain">
    Development framework for building AI applications
  </Card>

  <Card title="Dify" icon="workflow" href="/en/scenarios/engineering/dify">
    Visual AI application development platform
  </Card>
</CardGroup>

### 🌐 Translation

<CardGroup cols={2}>
  <Card title="Bob Translator" icon="languages" href="/en/scenarios/translation/bob">
    Professional translation tool for macOS
  </Card>

  <Card title="Immersive Translate" icon="globe" href="/en/scenarios/translation/immersive">
    Browser extension for bilingual reading
  </Card>
</CardGroup>

## 🚀 Why Choose APIYI?

### One Interface, Multiple Models

No need to apply for separate accounts and manage API keys for each AI service. With APIYI, you only need:

* **One account**: Manage all AI services
* **One API key**: Access all models
* **One standard**: Compatible with OpenAI API format

### 💡 Supported Models

We support 300+ industry-leading AI models:

#### OpenAI Series

* GPT-5.1 full series (latest iteration, intelligence and speed balanced)
* GPT-5 / GPT-5 Mini / GPT-5 Nano
* o3 / o3 Pro / o4-mini (reasoning models)
* GPT-4.1 / GPT-4o series
* Codex series (programming-focused)
* DALL·E 3 / GPT-Image-1

#### Anthropic Series

* **Claude Opus 4.5** (🔥 Latest flagship, SWE-bench 80.9%)
* Claude Sonnet 4.5 (World-class coding model)
* Claude Haiku 4.5 (High cost-performance)
* Claude 4 Sonnet / Claude 4 Opus

#### Google Series

* **Gemini 3 Pro Preview** (🔥 LMArena #1 globally)
* **Nano Banana Pro** (🔥 4K HD image generation)
* Gemini 2.5 Pro (2M context)
* Gemini 2.5 Flash (Fast response)

#### xAI Grok Series

* **Grok 4.5** (🔥 Newest flagship for code & agents)
* Grok 4.3 / Grok 4.20 series (1M context)
* Grok Build 0.1 (Code-focused)
* Grok 4.20 Multi-Agent (Multi-agent collaboration)
* [API guide](/en/api-capabilities/grok/overview) (web search / X search / code execution verified)

#### Chinese Models

* DeepSeek V3.2 / V3.1 / R1 (Hybrid reasoning)
* GLM-4.6 / GLM-4.5 (Zhipu AI)
* Kimi K2 (BytePlus official)
* Qwen series (Alibaba)
* ERNIE 4.0 (Baidu)
* SparkDesk 3.5 (iFlytek)

#### Video Generation Models

* **Seedance 2.0** (🔥 ByteDance's latest, synchronized audio by default)
* **Wan2.7** (Alibaba Wan, includes video editing)
* VEO 3.1 (Google official channel, up to 4K)
* Sora 2 / Sora 2 Pro (OpenAI official channel)

#### Image Generation Models

* Nano Banana Pro (4K HD)
* Flux / SeeDream (Professional-grade)
* Sora Image (Reverse-engineered)

### 🔧 Simple & Easy

Switching models is as simple as changing one parameter:

```python theme={null}
# Using GPT-4
response = openai.ChatCompletion.create(
    model="gpt-4",
    messages=[{"role": "user", "content": "Hello!"}]
)

# Switch to Claude 3
response = openai.ChatCompletion.create(
    model="claude-3-opus-20240229",  # Just change the model name
    messages=[{"role": "user", "content": "Hello!"}]
)
```

### 🛡️ Stable & Reliable

* **High Availability**: Multi-node deployment, intelligent routing
* **Auto Failover**: Automatic switching when a model is unavailable
* **Load Balancing**: Intelligent request distribution, avoiding rate limits
* **Real-time Monitoring**: 24/7 service status monitoring

### 💰 Cost Optimization

* **Unified Billing**: All models use a unified balance
* **Transparent Pricing**: Clear pricing structure
* **Usage Statistics**: Detailed usage reports
* **Flexible Top-up**: Multiple payment methods supported

## 🎯 Key Features

### 🔥 Latest Models Available Immediately

* **Claude Opus 4.5**: SWE-bench 80.9%, top coding capability, price reduced to 1/3 of predecessor
* **Gemini 3 Pro Preview**: LMArena 1501 Elo #1 globally, 1M context
* **Nano Banana Pro**: 4K HD image generation, best-in-class text rendering
* **Seedance 2.0 Video Generation**: ByteDance's latest flagship, synchronized audio by default, high concurrency with no queuing

### 🚀 Stable, Reliable & Unlimited Concurrency

Official partner resources (AWS, Azure, Google Cloud, BytePlus), high-performance infrastructure support, unlimited concurrency, ensuring stable operation in multi-industry production environments.

### 💰 Ultimate Value

* Top-up bonus: Up to 80% discount
* Exchange rate advantage: USD pricing is more affordable
* Cache optimization: GPT-5.1 prompt caching saves 90% cost
* Pay-as-you-go: Flexible billing by token or per use

## 🚀 Get Started

Ready to begin? Just three steps:

<CardGroup cols={3}>
  <Card title="Register" icon="user-plus" href="https://api.apiyi.com/register/?aff_code=Snip">
    Create your APIYI account
  </Card>

  <Card title="Get API Key" icon="key" href="/en/getting-started">
    Generate your API key
  </Card>

  <Card title="Integration" icon="code" href="/en/api-manual">
    View API docs to start integration
  </Card>
</CardGroup>

## 🔗 Quick Links

<CardGroup cols={2}>
  <Card title="Register Now" icon="user-plus" href="https://api.apiyi.com/register/?aff_code=Snip">
    Register and get 3 million free test tokens
  </Card>

  <Card title="Dashboard" icon="settings" href="https://api.apiyi.com/token">
    Manage API Keys, view usage statistics and billing
  </Card>
</CardGroup>

***

<Note>
  Register to get 3 million free test tokens, enough for thorough testing with the 4o-mini model. Additional \$1 bonus for first-time top-up.
</Note>