Anthropic Claims to Have the World’s Best Coding Model with Claude Sonnet 4.5: We Put it to the Test

Anthropic recently announced the release of Claude Sonnet 4.5, a large language model that they claim excels in coding tasks. According to Anthropic, Claude Sonnet 4.5 represents a significant leap forward in AI’s ability to write, understand, and debug code. To see if this claim held water, we ran a series of tests to assess its coding prowess. Our tests encompassed a variety of challenges, from basic programming tasks to more complex scenarios requiring creative thinking and problem-solving. We evaluated the model based on accuracy, efficiency, and the ability to handle existing code. Overall, Claude Sonnet 4.5 demonstrated remarkable proficiency in writing code, completing tasks quickly and accurately. It excelled at understanding intricate code structures and generating functional solutions. However, the model occasionally struggled with more nuanced tasks or those requiring specialized domain knowledge. In conclusion, while Claude Sonnet 4.5 shows great promise as a powerful coding tool, it is not without its limitations. While it may excel in many aspects of code generation, it may still require human assistance in certain scenarios.