Users are reporting a noticeable decline in the performance of Anthropic's Opus 4.8 and Sonnet models. Issues include the models fabricating bugs, ignoring clear instructions, and making up verifiable data points. These problems appear to be recent, with users noting that the models were more accurate just a week prior. The user suggests these issues are not prompt-related but indicate a fundamental change in the models' behavior, leading to increased confidence but decreased correctness. AI
IMPACT Potential decrease in user trust and productivity with specific Anthropic models.
RANK_REASON User reports on perceived performance degradation of existing models, not a new release or benchmark.
AI-generated summary · Google Gemini · from 1 sources. How we write summaries →
