Unverified50% confidenceFactExact time
Intermediate reasoning steps in Extra High reasoning mode exist as hidden tokens, which users cannot see but are still billed by the system.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/24/2026
First Seen
Valid until: 10/22/2026
Sources
Codex超高推理模式隐藏成本：一个任务耗尽70%额度的真相
redditr/OpenAI7/12/2026
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