This is an API gateway that routes requests to various LLM providers including OpenAI, Anthropic Claude, Google Gemini, and others while presenting a unified OpenAI-compatible interface. It supports features such as batch processing, assistant APIs, fine-tuning, embeddings, streaming responses, and built-in Chinese payment methods. The service allows developers to access GPT, Claude, Gemini, and other models without needing individual provider accounts or foreign payment methods.