Anthropic Publishes Prompting Guidance for Claude Opus 5.5
TLDR
Anthropic released updated prompting guidance for Claude Opus 5.5, recommending developers retest effort settings and reconsider certain prompt patterns.
Optimixed Overview
Optimixed's original report on this story.
Anthropic published prompting guidance for Claude Opus 5.5 that advises developers to retest effort settings and reconsider chat prompt lines that instruct Claude to think carefully. The recommendations aim to help users optimize their interactions with the updated model.