A user reported significant reasoning and behavioral issues with Anthropic's Opus 5 model, which struggled to follow instructions and made false assertions. The model repeatedly rejected the idea of implementing a "check the premise" protocol, leading to compounded errors and a failure to address workflow problems. In contrast, switching to the Fable 5 model resolved the issue in a single response, highlighting Opus 5's limitations in comprehending and applying foundational principles. AI
IMPACT Highlights potential reasoning limitations in advanced AI models and the importance of specific protocols for reliable operation.
RANK_REASON User commentary on model performance and comparison.
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