In 2025, AI voice agents have become integral to various industries, performing tasks such as scheduling, customer service, and interactive entertainment. The article provides three distinct tutorials from AssemblyAI’s YouTube channel for building AI voice agents, catering to different skill levels and project requirements. The first tutorial uses Vapi, a low-code platform that integrates AI models for transcription and text-to-speech, offering a streamlined process with monitoring capabilities. The second tutorial involves a Python-based implementation using DeepSeek's R1 model, which provides reasoning capabilities for complex problem-solving, along with real-time speech recognition and text-to-speech services. The third tutorial uses LiveKit for real-time speech-to-text in web applications, simplifying the creation of real-time audio and video applications with a focus on ease of integration. These examples showcase how developers can leverage platforms and tools like Vapi, DeepSeek R1, and LiveKit to create efficient and responsive AI voice agents.