Codex reasoning-token clustering at 516 may be leading to degraded performance
GPT-5.5CodexAI/MLmodel bugreasoning tokensperformance degradation
Author: 0x_rs
Date: 7/1/2026
Article Summary:
A GitHub issue reporting a potential bug in the GPT-5.5 Codex model, where responses disproportionately cluster at exact fixed values for reasoning tokens, leading to degraded performance on complex tasks.