Sonnet 4.5, the latest model from Anthropic, offers a paradoxical blend of enhanced capability and caution in code review, narrowing the performance gap with the more expensive Opus 4.1 while maintaining a cost-effective edge. Although Sonnet 4.5 improves upon its predecessor by identifying more critical issues and demonstrating increased precision, its tendency to hedge and present comments in an exploratory tone can sometimes make its suggestions seem less decisive. It excels in identifying concurrency bugs and consistency checks, though it still struggles with complex lock ordering, similar to its predecessors and Opus. Despite its verbosity and occasional lack of precision, Sonnet 4.5 represents a pragmatic choice for teams seeking a balance between price and performance, offering significant coverage improvement at reduced costs compared to Opus. Its thoughtful, albeit sometimes overly cautious, style of feedback provides a more human-like interaction, making it a valuable tool for those prioritizing comprehensive error detection over direct, patch-like feedback.