{
  "schema_version": "1.0",
  "surface_type": "guide_answer",
  "guide_id": "codex-vs-claude-code-cost",
  "question": "How do I compare Codex and Claude Code plan-only and plan-plus-overflow modes, with an optional usage-priced baseline?",
  "canonical_url": "https://www.unitcostai.com/guides/codex-vs-claude-code-cost",
  "related_tool_url": "https://www.unitcostai.com/tools/codex-vs-claude-code-cost",
  "formula": "usage_priced_monthly_spend = monthly_active_developers * api_equivalent_cost_per_active_developer_month; plan_only_monthly_spend = billed_seats * monthly_seat_price; plan_plus_overflow_monthly_spend = billed_seats * monthly_seat_price + monthly_active_developers * overflow_units_per_active_developer_month * overflow_unit_price",
  "assumptions": [
    "Usage-priced mode has no fixed seat assumption and uses your own API or credit baseline",
    "Overflow should only be modeled from explicit unit and overage-price inputs",
    "Compare useful coding sessions before the cap, not only the monthly seat price",
    "Soft limits and included allowances stay qualitative unless deterministic overage schedules are published"
  ],
  "example": "If usage-priced baseline is 600 per month, Codex seat spend is 320, and Codex overflow adds 48, Codex totals 368 in plan-plus-overflow mode. If Claude Code reaches its useful weekly cap earlier for the same sessions, the cheaper seat can still be worse."
}