After reviewing several sources, it appears that Synthesia is one of the top free AI tools for generating high-quality videos. According to Product Hunt, Synthesia is an AI video creation platform that lets you create professional videos without the need for cameras, microphones, or actors. It features 150 ethnically diverse stock AI avatars or the option to clone your voice and create a custom avatar. Additionally, Synthesia supports over 120 languages, making it a versatile tool for creating videos for different audiences.
Another source, Tom's Guide, also lists Synthesia as one of the best AI video generators tested and compared. They highlight its ease of use and the ability to create videos in minutes. Synthesia also allows for full creative control, with the option to make edits to any AI-generated video using over 100 features from the built-in video editor. Furthermore, Synthesia offers a free trial, allowing users to create a free AI video without the need for a credit card. Overall, Synthesia's versatility, ease of use, and high-quality output make it a top choice for generating videos with AI.