OpenAI Codex and Claude Code both offer $20/month entry tiers, but their incompatible metering philosophies make raw price comparisons meaningless. A hidden $0.12 per-task container fee on Codex often makes it far more expensive than Claude Code for typical developer workflows, despite lower headline token rates.
Identical entry-tier pricing hides completely incompatible metering philosophies. Both OpenAI Codex and Claude Code cost $20/month at the base level, but comparing them on price alone is like comparing a gym membership billed by the hour to one billed by the visit — the sticker means nothing until you understand how you actually work. The real cost depends on whether your day consists of long, uninterrupted reasoning sessions or many short, delegated tasks. Pick the wrong metering model and you'll burn through your allowance before lunch.
What I call the metering philosophy pattern explains why raw per-token rates are so misleading. Claude Code's API rates run $3/$15 per 1M tokens for Sonnet 4.6 and $15/$75 per 1M tokens for Opus 4.7, while Codex offers $1.75/$14.00 per 1M tokens for gpt-5.3-codex. On paper, Codex looks 40-70% cheaper. In practice, the opposite is true for most developers — and the reason is a single line item that doesn't appear on any headline comparison.
The Container Fee That Inverts the Math
Codex charges a $0.12 container fee per cloud task on top of token costs. Claude Code has no container fee.
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