Claude Opus 4.5 (Vertex AI (Anthropic))

Claude Opus 4.5 is Anthropic's latest frontier model in the Opus family, positioned around real-world software engineering, agentic task execution, and computer use. Anthropic's launch announcement describes it as state-of-the-art on SWE-bench Verified among frontier models at the time of release, with particular strength on coding, long-running agents, and working with everyday tools like slides and spreadsheets. The model is designed to handle ambiguity and reason about tradeoffs with minimal prompting, which Anthropic highlights as a step toward AI systems that can operate more independently on complex, multi-step work.

Beyond benchmark performance, Claude Opus 4.5 is framed as a practical upgrade for production AI work, including deep research, document handling, and tool-driven workflows. Anthropic notes the model scored higher than any human candidate on a difficult engineering take-home exam within a two-hour limit, and pairs the release with platform updates such as new tools for longer-running agents and broader availability across the Claude API and major cloud platforms. Together these point to a model aimed at teams building coding assistants, autonomous agents, and productivity tools that need a single model strong on both technical reasoning and everyday office tasks.