Prompting Claude Opus 5 (platform.claude.com)

The release of Claude Opus 5 brings significant improvements in prompting patterns tailored for complex coding and enterprise tasks. This model excels in long-horizon agentic work, maintaining strong performance with existing prompts from Claude Opus 4.8 while introducing optimized effort levels. Notably, lower effort settings yield high-quality responses at reduced token costs and latency, allowing developers to fine-tune performance according to their evaluations. Users are encouraged to explicitly control response length and communication style for enhanced clarity and conciseness. Claude Opus 5 also introduces new capabilities related to self-verification and task scope management. It autonomously verifies its outputs, which streamlines operations but may require adjustments to existing prompts that include verification instructions. Furthermore, the model's tendency to expand task scope necessitates explicit constraints from users to ensure focused outputs. With enhanced delegation to subagents and improved error correction narration, Claude Opus 5 represents a leap forward in responsiveness and usability, empowering AI developers to create more efficient workflows without sacrificing quality.