Claude Opus 4.5 stands out for its robust reasoning, ability to handle ambiguity, and capacity for multi-step planning and execution. Testers and early customers report that it can solve intricate bugs, manage long-horizon coding tasks, and autonomously refine its own capabilities, outperforming prior models and competitors on internal benchmarks. Its efficiency is notable, using fewer tokens to achieve better results and enabling cost-effective deployment for demanding agentic workflows and automation.
Beyond coding, Claude Opus 4.5 shows marked improvements in vision, mathematics, and general reasoning, making it versatile for a wide range of professional applications. It excels at creative problem solving, such as finding legitimate solutions within strict policies, and demonstrates advanced safety features, including robustness against prompt injection attacks. The model also introduces new platform features like effort control, context compaction, and advanced tool use, empowering users to tailor performance for different tasks and maximize productivity.

