I was surprised by that too. https://developers.openai.com/codex/pricing#what-are-the-usage-limits-for-my-plan https://developers.openai.com/codex/pricing#what

I was surprised by that too. https://developers.openai.com/codex/pricing#what-are-the-usage-limits-for-my-plan https://developers.openai.com/codex/pricing#what-are-the-usa... ChatGPT Plus with Codex CLI provides "45-225 local messages per 5 hour period". The https://chatgpt.com/codex/settings/usage https://chatgpt.com/codex/settings/usage is pretty useless right now - it shows that I used "100%" on December 14th - the day I ran this experiment - which presumably matches that Codex stopped working at 6:30pm but then started again when the 5 hour window reset at 7:14pm. Running this command: npx @ccusage/codex@latest Reports these numbers for December 14th along with a pricing estimate: │ Date │ Models │ Input │ Output │ Reasoning │ Cache Read │ Total Tokens │ Cost (USD) │ │ Dec 14, 2025 │ - gpt-5.2 │ 2,988,774 │ 1,271,970 │ 908,526 │ 194,963,328 │ 199,224,072 │ $57.16 │ You can spend a lot of tokens on that $20/month plan! It's possible OpenAI are being generous right now because they see Claude Code as critical competition.