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Claude Opus 4.5 - Anthropic's latest AI coding model

Author: AI小集 · Original source: AI工具集

What is Claude Opus 4.5

Claude Opus 4.5 is the latest advanced AI model released by Anthropic. The model excels in programming, system-level tasks, everyday research, and document processing, is skilled at handling complex software engineering problems, and can surpass human level on multiple benchmarks. The model has strong creative problem-solving abilities and can cleverly handle complex scenarios. Claude Opus 4.5 has been significantly enhanced in safety, with markedly improved resistance to malicious attacks. By optimizing efficiency and introducing new features, such as dynamic tool discovery and context management, the model makes task processing more efficient and more flexible. Claude Opus 4.5 is now availableApplications, API, and three major cloud platforms. Developers can call it through the Claude API claude-opus-4-5-20251101 for use, with pricing at $5/$25 per million tokens, allowing more users and teams to easily experience the powerful features.

Claude Opus 4.5

Main features of Claude Opus 4.5

  • Programming and code generation: Performs excellently in multiple programming languages, can generate high-quality code, solves complex programming problems, and is suitable for software development and code optimization.
  • Agentic task processing: The model can efficiently manage multiple sub-agents and build complex multi-agent systems.
  • Natural language processing: Skilled at handling ambiguous requirements, understanding complex instructions, capable of in-depth research and document processing, and suitable for various language-related tasks.
  • Creative problem solving: When facing complex problems, it can propose innovative solutions, surpassing traditional methods and expected answers.
  • Safety and alignment: Has strong anti-attack capabilities and higher safety, and can effectively prevent malicious exploitation and prompt injection attacks.
  • Efficiency optimization: By reducing token usage and introducing the effort parameter, it achieves higher efficiency and more flexible task processing.
  • Long conversations and context management: Supports long conversations, automatically summarizes context, avoids conversation interruptions, and is suitable for scenarios requiring continuous interaction.
  • Tool integration and dynamic invocation: Supports dynamic tool discovery and programmatic tool calling, can efficiently manage multiple tools and systems, and reduces context overload.

Performance of Claude Opus 4.5

  • Software engineering test：
    • SWE-bench Verified: Claude Opus 4.5 scored over 80%, the first model to reach this level, significantly ahead of other frontier models.
    • SWE-bench Multilingual: Among the eight programming languages covered, Claude Opus 4.5 ranks first in code quality for seven languages.
    • Internal high-difficulty test: In a specified two-hour software engineering test, Claude Opus 4.5 scored higher than all human candidates.
  • Agentic task test (τ²-bench)
    • Creative solution: In an airline customer service scenario, Claude Opus 4.5 proposed upgrading the cabin class first and then rebooking the flight, demonstrating strong adaptability.
  • Efficiency test
    • Token usage optimization: At medium effort level, Claude Opus 4.5 in the SWE-bench Verified test matches Sonnet 4.5 's best result, with 76% fewer output tokens.
    • Highest effort level: Performance is 4.3 percentage points higher than Sonnet 4.5, while reducing output volume by 48%.
    • Dynamic Tool Invocation: Through the Tool Search Tool, Claude Opus 4.5 reduces token usage by about 85%, significantly improving tool invocation efficiency.
Claude Opus 4.5

Claude Opus 4.5 Project Address

  • Project Official Website：https://www.anthropic.com/news/claude-opus-4-5

Feature Extensions of Claude Opus 4.5

  • Claude Code：Claude Code Plan Mode can now generate more precise execution plans, supports desktop applications, and can run multiple local or remote sessions simultaneously.
  • Claude for Excel and Chrome: The Beta testing scope of Claude for Excel has expanded, supporting a broader user base. At the same time, Claude for Chrome is now available to all Max users, allowing users to handle tasks directly in the browser, making cross-tab operations more convenient.
  • Long Conversation Support: The Claude app supports long conversations, automatically summarizing earlier context to avoid conversation interruptions. This enables users to have a smoother experience in complex conversations or scenarios requiring continuous interaction.

Application Scenarios of Claude Opus 4.5

  • Software Development and Programming: Claude Opus 4.5 performs excellently in multilingual programming tests, can generate high-quality code, and is suitable for software development, code optimization, and complex problem solving.
  • Agent Tasks and Automation: By efficiently managing multiple sub-agents, Claude Opus 4.5 can build complex multi-agent systems, suitable for automated tasks and system-level operations.
  • Document Processing and Research: Claude Opus 4.5 is suitable for handling long documents, PPT creation, and in-depth research tasks.
  • Data Analysis and Excel: The feature extensions of Claude for Excel enable it to efficiently handle complex data, suitable for data analysis and spreadsheet processing.