Post #232991 1.72K Sep 28, 2026, 08:18 UTC Prompting Claude Opus 5.5Article, Comments Claude Platform Docs Prompting Claude Opus 5.5 Behavioral differences from Claude Opus 5 and the prompting and harness patterns that address them: effort calibration, thinking behavior in API integrations and chat, progress updates, unattended and multiagent tasks, safeguard refusals, frontend design… 🤡 13 👎 4 🤮 4 🌭 1