World's leading unified LLM gateway with automatic failover
🎁 Free Quota & Policy
20+ models with :free suffix permanently 0 cost
Zero card binding · Email or GitHub login · Unlimited recurring use
🛡️ Auth & Access Requirements
Generate sk-or- API Key in settings
Standard OpenAI protocol; 100% compatible across the entire AI ecosystem
📊 Concurrency & Context
20 RPM Free Tier Limit
One single key unlocks dozens of open flagships & reasoning models
🔌 OpenAI-Compatible Base URL
https://openrouter.ai/api/v1
💡 Directly paste the address above as Base URL into any OpenAI-compatible client (NextChat, Cherry Studio, Immersive Translate, etc.).
📋 Featured Models:
Click Model ID to copy
满血R1deepseek/deepseek-r1:free
OpenRouter 官方托管的免费满血 DeepSeek-R1 思考模型
Meta70Bmeta-llama/llama-3.3-70b-instruct:free
Meta 70B 满血开源旗舰指令模型
谷歌2.0google/gemini-2.0-flash-exp:free
Gemini 2.0 极速多模态免费通道
💡 Key Traps & Practical Tips
20+ Officially Verified :free Models Permanent 0 Cost · No credit card · Global unified routing
1. Protocol Compatibility: Most modern LLMs are fully OpenAI-compatible. In Python, simply use the official openai SDK for seamless switching.
2. Network Routing: Providers labeled Direct Connection respond in milliseconds domestically. Providers labeled Global Network are best called from servers with international access.
3. Local Key Security: When using tools on FreeAI Dog, all API Keys are strictly saved in your browser localStorage and never transmitted to any third-party server.