OpenAI has announced the launch of its latest-generation AI language model, GPT-4, which is a large-scale multimodal model that can handle both images and text with higher accuracy and reasoning capabilities. However, GPT-4 still has limitations, such as the potential for logical errors and a lack of deep understanding of specific domain-specific logic flaws. In contrast, the formal verification tool Beosin VaaS can automatically discover common vulnerabilities, business logic errors, and other security issues in smart contracts and provide expert recommendations for remediation, achieving an accuracy rate of over 97%. When it comes to auditing smart contracts, Beosin VaaS may be more powerful than ChatGPT.