OpenAI Codex Complete Plan Analysis: Agent Integration in the ChatGPT Ecosystem
Codex is tied to ChatGPT subscriptions ($20-200/mo). GPT-5.4 + mini automatic routing is the highlight, and the CLI supports dual billing via Plan mode and API Key mode.
Codex is tied to ChatGPT subscriptions ($20-200/mo). GPT-5.4 + mini automatic routing is the highlight, and the CLI supports dual billing via Plan mode and API Key mode.