What's Claude 4?
Claude 4 is the latest generation of the Artificial Intelligence model series released by Anthropic on May 22, 2025, and consists of the flagship model, Claude Opus 4, and the high-efficiency model, Claude Sonnet 4.With significant breakthroughs in coding power, depth of reasoning, and autonomous task execution, the series is designed to advance AI agents, complex engineering tasks, and enterprise-class applications.
Claude 4 Core Highlights
Claude Opus 4:
- Excellent coding skills::Leading performance in SWE-bench (72.51 TP4T) and Terminal-bench (43.21 TP4T) tests, hailed as the "World's Best Coding Model". .
- Long-duration task processing::The ability to perform complex tasks for hours on end without interruption, supporting processes with up to thousands of steps.
- mixed inference model::Supports immediate response and "extended thinking" modes for deep reasoning and multi-step tasks.
- Autonomous agency capacity::In customer tests, the Claude Opus 4 was able to work autonomously for up to 7 hours, demonstrating strong autonomous task execution capabilities. .
- Security level upgrade::Because of its robust capabilities, Anthropic has set an AI Security Level 3 (ASL-3) and implemented strict security measures, including protection against misuse and enhanced cybersecurity protections .
Claude Sonnet 4:
- Balancing performance and cost::An upgrade to Claude 3.7 Sonnet, offering higher coding and reasoning capabilities while keeping costs low.
- Precise instructions to follow::When dealing with complex tasks, it is able to follow user instructions more accurately and improve the accuracy of task completion.
Claude 4 Key Features
- Advanced Encoding Support::Suitable for large-scale code generation, refactoring and debugging tasks, it supports 32K output tokens to meet the needs of complex projects.
- Autonomous agent implementation::Ability to work independently on multi-step tasks such as multi-channel marketing campaign management, cross-departmental workflow coordination, etc.
- Tool use and search capabilities::Supports calling external tools and conducting information search during task execution to enhance the efficiency and accuracy of task completion.
- Content creation capacity::Strong verbal skills and ability to generate high quality text content for creative writing, report writing and other scenarios.
Claude 4 Usage Scenarios
- software development::Automate code generation, code review and multi-file refactoring to improve development efficiency.
- enterprise automation::Build autonomous AI agents that perform complex business processes such as data analysis, report generation, and more.
- Research and analysis::Handle large amounts of literature and data to conduct in-depth research and analysis to aid in decision making.
- content creation::Generate high-quality articles, reports, and other text content for creative writing needs.
Claude 4 Recommended Reasons
- Leading encoding performance::Excellent performance in multiple benchmarks for demanding coding tasks.
- Strong autonomous mission execution capability::Ability to work independently on complex multi-step tasks to increase productivity.
- Flexible Reasoning Model::Support instant response and deep reasoning to meet different task requirements.
- Strict security controls::Implement high-level security measures to ensure safe use of the model.