AssemblyAI Voice Agent API vs ElevenLabs Conversational AI: Which is better for voice agents?

AssemblyAI's Voice Agent API and ElevenLabs Conversational AI offer contrasting approaches to developing voice agents, with AssemblyAI focusing on advanced speech understanding and ElevenLabs expanding its text-to-speech (TTS) capabilities into voice agents. AssemblyAI's API, built specifically for production voice agents, boasts superior speech understanding with a 94.07% word accuracy and lower missed entity rates, making it more suitable for tasks requiring precise input capture, such as customer support and clinical workflows. It offers unlimited concurrency, flat-rate pricing, and full API control, allowing for scalable and customizable solutions. In contrast, ElevenLabs provides a managed platform with a focus on TTS quality, supporting over 29 languages but with a cap of 30 concurrent agents, which may limit its scalability and control in production environments. While ElevenLabs offers impressive voice synthesis, its limitations in speech understanding and scalability make AssemblyAI the preferred choice for production-scale voice agents that prioritize accuracy and flexibility.