Claude Opus 4.5 (latest)

Claude Opus 4.5 is positioned as Anthropic's flagship model for deep reasoning, coding, and long-horizon agent workflows, reflecting its role as the top-tier offering in the Claude family. Independent evaluation data from Artificial Analysis places it at a score of 33.6 on the AA Intelligence Index under thinking configuration and 27.8 in standard mode, indicating strong general reasoning capability. The model accepts text, image, and PDF inputs while producing text outputs, and supports reasoning, tool calling, and temperature control for flexible deployment in agentic pipelines.

Beyond core reasoning benchmarks, Claude Opus 4.5 shows competitive preference scores across multiple Design Arena categories, including 1263 in dataviz, 1259 in codecategories, 1251 in 3d, 1213 in asciiart, 1197 in androidnative, and 1161 in fullstack, suggesting balanced competence across visual, design, and fullstack coding domains. These results, mirrored from OpenRouter and Artificial Analysis, suggest the model is well suited for tasks that blend coding with design judgment and multi-step planning. Practically, it fits teams that need a top-tier reasoning engine for agentic coding assistants, research synthesis, and complex multi-turn workflows where sustained coherence matters.