Expired50% confidenceFactExact time
Early Codex had a context window of only approximately 4K tokens, allowing it to handle only single-file-level code comprehension tasks.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Codex APP Deep Dive: Comparison with Claude Code and How to Choose
bilibili首席bug专家6/5/2026
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