Introduction

Core Advantages 🌟

✅ Convenient access
✅ No need for proxy or VPN to connect
✅ No risk of account suspension
✅ Connection speed 1200x faster than the official service
✅ Global coverage across 7 regions: USA, Japan, South Korea, UK, Hong Kong, Philippines, Russia

Key Features

✅ Clear and structured model access management
✅ Direct access to the latest AI models
✅ One API Key works for all models
✅ API Keys can have custom expiration dates and usage limits
✅ Supports API key transfers without losing remaining value

Commercial Advantages

🎁 New users receive $0.2 free credit to get started
💰 Lower pricing than the official service
🔒 Supports multi-model access across multiple channels
💼 Serving over 100,000 satisfied customers
🏢 A network of 190 reseller partners worldwide

Feature Comparison Table

Feature	Key4U API	Official API
GPT-4 and above model support	✅ Full support	❌ Requires GPT-4 enabled account
High-speed access	✅	❌ Requires card linking and 48h wait
Multi-account & concurrent usage	✅ Hundreds of accounts	❌ Limited per API key
OpenAI account required	✅ No registration needed	❌ Requires sign-up & international phone number
API Key expiration	✅ Never expires	❌ Expires after 3 months
Risk of account ban	✅ No ban risk	❌ Prone to sudden suspension
Usage history	✅ Real-time view, stored for 30 days	❌ Only total consumption visible
Proxy required	✅ No proxy needed	❌ Only accessible in approved regions
Pricing	Discounted rates	Standard retail pricing
API endpoint	https://api.key4u.vn	https://api.openai.com
Interface compatibility	✅ Compatible with multiple platforms	❌ Not supported

Technical Advantages

💯 Uses enterprise-grade high-speed connections
🔒 No traffic rerouting, no user data stored
🌐 Clean, stable, unmodified API source
🔄 Fully compatible with the OpenAI API protocol
🛠️ No coding skills required — easy to integrate into any application

Core Advantages 🌟#

Key Features#

Commercial Advantages#

Feature Comparison Table#

Technical Advantages#

Core Advantages 🌟

Key Features

Commercial Advantages

Feature Comparison Table

Technical Advantages