chatanywhere/gpt_api_free

GPT_API_free is a service (distributed as a GitHub repository) that provides free and low-cost API access to multiple large language models for users in China and elsewhere, without requiring a VPN or proxy. The problem it addresses is that the official OpenAI API is inaccessible from mainland China, and even where it is accessible, accessing it directly requires a credit card and adds international latency. This project provides a relay endpoint that accepts the same request format as the OpenAI API, forwarding calls to GPT, DeepSeek, Claude, Gemini, Grok, and other models. How it works: the service acts as a compatible API proxy. You obtain a free API key from their registration page, then point any OpenAI-compatible client (a coding assistant, chatbot application, or custom script) at the relay host instead of the official endpoint. Because the interface is identical to OpenAI's, no code changes are needed beyond swapping the base URL. A free tier is provided with daily request limits (roughly 200 requests per day per IP and key for most models), paid tiers are available for higher throughput and stronger models. The free keys are explicitly restricted to personal, non-commercial, educational, and non-profit research use, commercial use and large-scale model training are prohibited. You would use this when you are in China and want to experiment with GPT or DeepSeek models in hobby projects, study AI development, or integrate an LLM into a personal tool, without the friction of a VPN and an international payment method. This repository has no primary programming language because it is a service registration and documentation page rather than a software library. Integration happens by configuring an existing OpenAI SDK client to use the relay URL, so no code from this repository is installed or run.