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A postmortem of three recent issues
This is a technical report on three bugs that intermittently degraded responses from Claude. Below we explain what happened, why it took time to fix, and what we're changing.
By late August, the increasing frequency and persistence of these reports prompted us to open an investigation that led us to uncover three separate infrastructure bugs. We recognize users expect consistent quality from Claude, and we maintain an extremely high bar for ensuring infrastructure changes don't affect model outputs. On August 26, we deployed a rewrite of our sampling code to fix the precision issues and improve how we handled probabilities at the limit that reach the top-p threshold.
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