IntroductionFrom late 2025 to early 2026, domestic AI large model manufacturers in China have intensively focused on the AI programming赛道, launching Coding Plan subscription packages targeted at developers. These plans replace traditional token-based billing with fixed monthly fees, dramatically lowering the usage threshold for AI-assisted programming.However, the market is flooded with diverse packages featuring vastly different pricing, quotas, and model support. Many contain billing traps that 90% of developers easily fall into.This artic...