CodexSaver Offloads Routine Coding to DeepSeek to Cut OpenAI Codex Costs by 40–70%

A new open-source tool called CodexSaver aims to slash the cost of running OpenAI's Codex by routing routine coding work to cheaper models such as DeepSeek, while reserving Codex itself for high-level reasoning and final review. The project, published on GitHub under the fendouai/CodexSaver repository, claims cost reductions of 40–70% by acting as a smart router rather than a replacement for Codex.