Opus 4.5

About the Model

Claude Opus 4.5 is Anthropic’s newest and most capable frontier model. Designed for heavy-duty agentic workflows, complex software engineering, and deep research, Opus 4.5 handles ambiguity and reasoning with unprecedented precision. With the introduction of the dynamic "Effort Control" parameter, it achieves state-of-the-art results while using significantly fewer tokens, making it a highly efficient and cost-effective choice for enterprise deployment on Deepmask.

Model Key Capabilities

• State-of-the-Art Software Engineering:

  Outperforms human candidates on elite engineering exams. Excels at codebase migrations, complex refactoring, and 30-minute autonomous coding sessions.

  
  

• Dynamic Effort Control:

  A brilliant new parameter that lets you control the model's thinking depth. Minimize time and spend for standard tasks, or maximize capability for difficult problems.

  
  

• Autonomous Agents & Orchestration:

  Built for long-horizon tasks, multi-step execution, and managing teams of sub-agents with minimal dead-ends.

  
  

• Advanced Everyday Productivity:

  Seamlessly handles long-context storytelling (10-15 pages), massive spreadsheet automation, financial modeling, and 3D visualization.

Applications & Use Cases

• Deep Research & Analysis

  • Digest and synthesize massive datasets, financial documents, and technical reports using the 200K context window.

  • Generate 10-15 page chapters with high consistency and structural organization.

• Production-Grade Coding Agents

  • Build robust autonomous agents capable of creating, testing, and iterating on entire codebases.

  • Slash tool-calling errors and build/lint errors by up to 75%.

• Enterprise Automation

  • Automate complex Excel workflows, financial modeling, and data formatting with a 20% boost in accuracy.

  • Create multi-agent systems that autonomously refine their own capabilities over iterations.

• High-Fidelity Vision & UI

  • Process and understand complex 3D visualizations, desktop environments, and UI screenshots.

  • Extract functional planning and actionable insights directly from visual inputs.