TokenDuoDuo

TokenDuoDuo (tokenduoduo.cn) is a comprehensive directory and guide for developers in China seeking free or low-cost access to large model APIs. In the rapidly evolving landscape of 2026, many providers like Google, DeepSeek, and domestic giants offer significant free tiers. TokenDuoDuo tracks these quotas, compares pricing across different providers (OpenRouter, SiliconFlow, etc.), and provides tutorials on how to integrate these APIs into local projects. It is an essential resource for students, indie hackers, and developers looking to build AI applications with minimal overhead costs.