Users Report Severe Degradation in Opus Performance
Ok_Sundae_5033 · reddit · 2026-07-15
A long-time user of the Opus series reported experiencing continuous and glaring errors across multiple sessions: some sessions misunderstood the analytical logic, while others got "increasingly derailed" after being reviewed.
They noted that when Codex and Grok were used as cross-checkers to point out mistakes, the model would further "lose control," rendering the entire workflow unusable. The author concluded that this isn't just ordinary instability, but borders on a "total breakdown."
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