Codex

Codex auto-renewed this month. I hadn’t really planned on continuing my subscription, but this renewal prompted me to re-evaluate the actual experience with Codex, DeepSeek V4 series, and Copilot. For me, the core difference among AI coding tools is no longer just model capability, but rather which one can help me write code more stably, affordably, and consistently.

Codex’s $22 monthly subscription fee and usage limits prompted me to seek a cheaper, stable, and always-ready backup solution. After an unsuccessful attempt with OpenCode, I turned to the Pi + DeepSeek combination. The result was a bit unexpected: writing an entire blog post cost only 0.24 RMB.