Users are reporting that Anthropic's Opus 5 model is exhibiting a decline in performance, specifically by ignoring user instructions. This behavior is perceived as a negative change in the model's functionality and responsiveness. AI
IMPACT Potential decline in user trust and adoption for Anthropic's Opus 5 model due to instruction-following issues.
RANK_REASON User reports on a model's performance issues, not an official release or benchmark.
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