Users of OpenAI's GPT Codex are reporting a degradation in quality and reasoning capabilities when processing inputs exceeding approximately 180,000 tokens. This decline in performance manifests as sloppier logic, dropped context, and incorrect assumptions. To mitigate these issues, some users are capping their sessions below this threshold, though this can lead to frequent compaction. AI
IMPACT Highlights practical limitations of current context window sizes for complex coding tasks.
RANK_REASON User discussion about model performance limitations, not a primary release or research finding.
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