Claude Opus 4.5

The most intelligent Claude model for the hardest problems. Opus 4.5 excels at extremely complex reasoning, advanced coding challenges, sophisticated research, and intricate multi-step planning. With enhanced general intelligence and vision capabilities, this model tackles problems that push the boundaries of AI capability. Perfect for cutting-edge research, complex system design, advanced agentic workflows, and situations where you absolutely need the highest quality thinking available. The ultimate problem-solver.