深夜炸场！Claude Sonnet 4.5上线，自主编程30小时，网友实测：一次调用重构代码库，新增3000行代码却运行失败

Core Viewpoint - The article discusses the release of Claude Sonnet 4.5 by Anthropic, highlighting its advancements in coding capabilities and safety features, positioning it as a leading AI model in the market [1][3][10]. Group 1: Model Performance - Claude Sonnet 4.5 has shown significant improvements in coding tasks, achieving over 30 hours of sustained focus in complex multi-step tasks, compared to approximately 7 hours for Opus 4 [3]. - In the OSWorld evaluation, Sonnet 4.5 scored 61.4%, a notable increase from Sonnet 4's 42.2% [6]. - The model outperformed competitors like GPT-5 and Gemini 2.5 Pro in various tests, including Agentic coding and terminal coding [7]. Group 2: Safety and Alignment - Claude Sonnet 4.5 is touted as the most "aligned" model to date, having undergone extensive safety training to mitigate risks associated with AI-generated code [10]. - The model received a low score in automated behavior audits, indicating a lower risk of misalignment behaviors such as deception and power-seeking [11]. - It adheres to AI Safety Level 3 (ASL-3) standards, incorporating classifiers to filter dangerous inputs and outputs, particularly in sensitive areas like CBRN [13]. Group 3: Developer Tools and Features - Anthropic has introduced several updates to Claude Code, including a native VS Code plugin for real-time code modification tracking [15]. - The new checkpoint feature allows developers to automatically save code states before modifications, enabling easy rollback to previous versions [21]. - The Claude Agent SDK has been launched, allowing developers to create custom agent experiences and manage long tasks effectively [19]. Group 4: Market Context and Competition - The article notes a competitive landscape with other AI models like DeepSeek V3.2 also making significant advancements, including a 50% reduction in API costs [36]. - There is an ongoing trend of rapid innovation in AI tools, with companies like OpenAI planning new product releases to stay competitive [34].