anyrouter Platform GPT Codex Model Suddenly Fails: Configuration Issue or Service Adjustment?

Recently, users have reported that the GPT Codex model configured on the anyrouter platform suddenly stopped working, with the system prompting them to upgrade to a Plus plan to continue using it. The user had previously successfully configured and used this model, but began experiencing connection issues at the end of last month. The user attempted to switch to the Claude Code model, which was available but had an unstable connection. The article details the user’s configuration parameters, including model settings and authentication information, hoping to get help from the community to resolve this issue. This reflects potential compatibility changes between third-party AI service providers and official APIs, which has important reference value for AI developers and users who rely on such services. The problem may stem from server-side adjustments, API changes, or authentication mechanism updates, requiring further investigation.