Claude Opus 4.5 is positioned by Anthropic as its flagship model for deep reasoning, coding, and long-horizon agent workflows, continuing the claude-opus family lineage. It is a closed-weights model that accepts text, image, and PDF inputs and produces text-only outputs, making it well suited to multimodal comprehension tasks such as document analysis and vision-grounded reasoning. A 200,000-token context window gives it substantial room for lengthy codebases, research papers, or multi-document prompts before generation begins, while the 64,000-token output ceiling supports extended responses including full code files and detailed analytical write-ups.

Practical strengths include native support for reasoning, tool calling, and temperature control, with structured outputs available across multiple provider listings, which makes the model a strong fit for autonomous agent pipelines and production code-generation workloads. An Anthropic-list pricing benchmark sits at roughly $5 per million input tokens and $25 per million output tokens, with cached input around $0.50 per million, and third-party hosts price comparably though slightly higher in some cases. Release and update both landed in late November 2025 with a May 2025 knowledge cutoff, so organizations evaluating Snowflake Cortex deployments get a recent flagship-tier model tuned for sustained, instruction-driven work rather than lightweight chat.