The emergence of Agentic AI in 2025 signifies a pivotal shift in AI-driven automation, with intelligent, autonomous systems capable of reasoning and adaptive decision-making, enhancing voice interactions to be more natural and contextually aware. Unlike traditional AI models, these advanced voice agents are increasingly integrated across various industries such as finance, healthcare, and e-commerce, optimizing workflows, user engagement, and customer interactions. They use cutting-edge AI methodologies, including large language models and speech-to-text-to-speech conversions, to facilitate intuitive and dynamic conversational interactions. The evolution from traditional interactive voice response systems to modern AI voice agents has been propelled by deep learning and reinforcement learning, allowing for more complex and context-aware dialogues. Key skills for implementing these agents include understanding AI guardrails, preventing data leakage, and prompt engineering. Future developments include multimodal processing, emotion recognition, and enhanced contextual understanding, promising a more seamless, human-like interaction and cross-platform consistency. These advancements are set to transform industries by providing scalable, efficient, and secure AI solutions, with companies like Gladia offering tools to develop enterprise-scale voice-first platforms.