A user on Reddit reported that Anthropic's Fable 5 model has begun to exhibit increased hallucination and generate inaccurate code-based specifications. The user also noted that the model refused to speculate on GPT 5.4 mini, stating it could only run Claude models and lacked access to other providers' APIs. AI
IMPACT Potential decrease in reliability for Anthropic's Fable 5 model, impacting user trust and performance.
RANK_REASON User report of potential model degradation, not an official release or benchmark.
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