Arnold is an intelligent assistant integrated within LinkedIn that utilizes advanced large language model (LLM) technology to enhance user interactions. This tool offers features such as conversational engagement, rationale-based responses, and dynamic text generation, all tailored for LinkedIn. Users can rely on Arnold for a range of functionalities, including proofreading emails, generating insightful comments for posts, and optimizing profiles with minimal input required. It acts as a smart companion, offering context-aware support that elevates the entire networking experience on LinkedIn, ensuring users can navigate their job applications and social networking tasks more efficiently.