ElevenLabs and Amazon Polly are two AI audio platforms compared in terms of voice quality, latency, language support, and customization features. ElevenLabs is noted for its extensive library of over 5,000 lifelike AI voices, advanced voice customization options, and low latency, making it suitable for real-time applications like conversational AI and premium content creation. It supports 70+ languages and offers features like instant voice cloning and voice design, allowing users to create new voices tailored to their needs. In contrast, Amazon Polly offers 100 voices with basic customization and supports 29 languages, but lacks advanced features like voice cloning and creation. ElevenLabs has been independently benchmarked to deliver superior, human-like voice quality and expressiveness, with a listener preference rate of 75.3%. It also provides transparent per-character pricing and commercial usage rights, making it a comprehensive solution for diverse, high-quality international voice output.